diff --git a/Cargo.lock b/Cargo.lock
index d8556d9..711c164 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1328,6 +1328,12 @@ dependencies = [
  "winapi 0.3.9",
 ]
 
+[[package]]
+name = "path-slash"
+version = "0.1.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3cacbb3c4ff353b534a67fb8d7524d00229da4cb1dc8c79f4db96e375ab5b619"
+
 [[package]]
 name = "percent-encoding"
 version = "2.1.0"
@@ -2255,6 +2261,7 @@ dependencies = [
  "liquid",
  "log",
  "octocrab",
+ "path-slash",
  "regex",
  "serde",
  "serde_json",
diff --git a/Cargo.toml b/Cargo.toml
index dcab0bc..6b0502b 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -25,6 +25,7 @@ hyper = "0.12.27"
 liquid = "0.21"
 log = "0.4"
 octocrab = "0.6"
+path-slash = "0.1"
 regex = "1.3"
 serde_json = "1.0"
 serde_yaml = "0.8"
diff --git a/src/config.rs b/src/config.rs
index a04b412..a6530a0 100644
--- a/src/config.rs
+++ b/src/config.rs
@@ -25,6 +25,7 @@ use std::fmt;
 use std::iter::once;
 use std::path::{Path, PathBuf};
 use std::str::FromStr;
+use path_slash::PathBufExt as _;
 
 pub const CONFIG_FILENAME: &str = ".versio.yaml";
 
@@ -358,7 +359,7 @@ impl Project {
   pub fn changelog(&self) -> Option<Cow<str>> {
     self.changelog.as_ref().map(|changelog| {
       if let Some(root) = self.root() {
-        Cow::Owned(PathBuf::from(root).join(changelog).to_string_lossy().to_string())
+        Cow::Owned(PathBuf::from_slash(root).join(PathBuf::from_slash(changelog)).to_slash_lossy())
       } else {
         Cow::Borrowed(changelog.as_str())
       }
@@ -374,7 +375,7 @@ impl Project {
     }
 
     if let Some(log_path) = self.changelog().as_ref() {
-      let log_path = Path::new(log_path.as_ref()).to_path_buf();
+      let log_path = PathBuf::from_slash(log_path.as_ref());
       let old_content = extract_old_content(&log_path)?;
       write.write_file(log_path.clone(), construct_changelog_html(cl, new_vers, old_content)?, self.id())?;
       Ok(Some(log_path))
@@ -447,10 +448,10 @@ impl Project {
     Ok(())
   }
 
-  /// Ensure that we don't have excludes without includes.
+  /// Ensure that we don't have a version tag without a tag_prefix.
   fn check_prefix(&self) -> Result<()> {
     if self.version.is_tag() && self.tag_prefix.is_none() {
-      bail!("Proj {} has version: tag without tag_prefix, self.id");
+      bail!("Proj {} has version: tag without tag_prefix.", self.id);
     }
     Ok(())
   }
@@ -494,7 +495,7 @@ impl Project {
       if root == "." {
         pat.to_string()
       } else {
-        PathBuf::from(root).join(pat).to_string_lossy().to_string()
+        PathBuf::from_slash(root).join(PathBuf::from_slash(pat)).to_slash_lossy()
       }
     } else {
       pat.to_string()
@@ -699,10 +700,10 @@ fn expand_name(name: &str, sub: &SubExtent) -> String {
 fn expand_root(root: Option<&String>, sub: &SubExtent) -> Option<String> {
   match root {
     Some(root) => match sub.dir() {
-      Some(subdir) => Some(Path::new(root).join(subdir).to_string_lossy().into_owned()),
-      None => Some(Path::new(root).to_string_lossy().into_owned())
+      Some(subdir) => Some(PathBuf::from_slash(root).join(subdir).to_slash_lossy()),
+      None => Some(root.clone())
     },
-    None => sub.dir().as_ref().map(|subdir| Path::new(subdir).to_string_lossy().into_owned())
+    None => sub.dir().clone()
   }
 }
 
@@ -731,6 +732,7 @@ fn expand_version(version: &Location, sub: &SubExtent) -> Location {
 fn expand_also(also: &[Location]) -> Vec<Location> { also.iter().filter(|l| !l.is_tags()).cloned().collect() }
 
 struct SubExtent {
+  // TODO: ensure `dir` will always be a single-level relative path (i.e. no slashes)
   dir: Option<String>,
   majors: Vec<u32>,
   largest: bool,
@@ -964,8 +966,8 @@ impl FileLocation {
 
   pub fn rooted(&self, root: Option<&String>) -> PathBuf {
     match root {
-      Some(root) => PathBuf::from(root).join(&self.file),
-      None => PathBuf::from(&self.file)
+      Some(root) => PathBuf::from_slash(root).join(PathBuf::from_slash(&self.file)),
+      None => PathBuf::from_slash(&self.file)
     }
   }
 }
diff --git a/src/git.rs b/src/git.rs
index 3f1c1a9..94caf78 100644
--- a/src/git.rs
+++ b/src/git.rs
@@ -24,6 +24,7 @@ use std::fmt;
 use std::io::{stdout, Write};
 use std::iter::empty;
 use std::path::{Path, PathBuf};
+use path_slash::PathBufExt as _;
 
 pub struct Repo {
   vcs: GitVcsLevel,
@@ -489,10 +490,18 @@ impl<'r> Slice<'r> {
     Ok(tree.iter().filter_map(|entry| entry.name().map(|n| n.to_string())).filter(|n| filter.is_match(n)).collect())
   }
 
+  #[cfg(not(target_family = "windows"))]
   fn object(&self, path: &str) -> Result<Object> {
     Ok(self.repo.repo()?.revparse_single(&format!("{}:{}", self.refspec.tag(), path))?)
   }
 
+  // Always path issues on windows. See https://github.com/JuliaLang/julia/issues/18724
+  #[cfg(target_family = "windows")]
+  fn object(&self, path: &str) -> Result<Object> {
+    let path = path.replace('\\', "/");
+    Ok(self.repo.repo()?.revparse_single(&format!("{}:{}", self.refspec.tag(), &path))?)
+  }
+
   pub fn date(&self) -> Result<Option<Time>> {
     let obj = match self.repo.repo()?.revparse_single(&format!("{}^{{}}", self.refspec.tag())) {
       Ok(obj) => obj,
@@ -1034,7 +1043,7 @@ fn files_from_commit<'a>(repo: &'a Repository, commit: &Commit<'a>) -> Result<im
     let ctree = commit.tree()?;
     let diff = repo.diff_tree_to_tree(Some(&ptree), Some(&ctree), Some(&mut DiffOptions::new()))?;
     let iter = DeltaIter::new(diff);
-    Ok(E2::A(iter.map(move |path| path.to_string_lossy().into_owned())))
+    Ok(E2::A(iter.map(move |path| path.to_slash_lossy())))
   } else {
     Ok(E2::B(empty()))
   }
@@ -1141,8 +1150,11 @@ fn verify_current(repo: &Repository) -> Result<()> {
   status_opts.include_ignored(false);
   status_opts.include_untracked(true);
   status_opts.exclude_submodules(false);
-  if repo.statuses(Some(&mut status_opts))?.iter().any(|s| s.status() != Status::CURRENT) {
-    bail!("Repository is not current.");
+
+  let statuses = repo.statuses(Some(&mut status_opts))?;
+  let bad_status = statuses.iter().find(|s| s.status() != Status::CURRENT);
+  if let Some(bad_status) = bad_status {
+    bail!("Repository is not current: {} = {:?}", bad_status.path().unwrap_or("<none>"), bad_status.status());
   }
   Ok(())
 }
diff --git a/src/init.rs b/src/init.rs
index 7277005..29eb1aa 100644
--- a/src/init.rs
+++ b/src/init.rs
@@ -12,6 +12,7 @@ use std::ffi::OsStr;
 use std::fs::OpenOptions;
 use std::io::Write;
 use std::path::Path;
+use path_slash::PathExt;
 
 pub fn init(max_depth: u16) -> Result<()> {
   if Path::new(CONFIG_FILENAME).exists() {
@@ -40,14 +41,14 @@ fn find_project(name: &OsStr, file: &Path) -> Result<Option<ProjSummary>> {
   if fname == "package.json" {
     let name = extract_name(file, |d| JsonScanner::new("name").find(&d))?;
     let dir = file.parent().unwrap();
-    return Ok(Some(ProjSummary::new_file(name, dir.to_string_lossy(), "package.json", "json", "version", &["npm"])));
+    return Ok(Some(ProjSummary::new_file(name, dir.to_slash_lossy(), "package.json", "json", "version", &["npm"])));
   }
 
   if fname == "Cargo.toml" {
     let name = extract_name(file, |d| TomlScanner::new("package.name").find(&d))?;
     let dir = file.parent().unwrap();
     let mut proj =
-      ProjSummary::new_file(name, dir.to_string_lossy(), "Cargo.toml", "toml", "package.version", &["cargo"]);
+      ProjSummary::new_file(name, dir.to_slash_lossy(), "Cargo.toml", "toml", "package.version", &["cargo"]);
     proj.hook("post_write", "cargo update --workspace");
     return Ok(Some(proj));
   }
@@ -57,13 +58,13 @@ fn find_project(name: &OsStr, file: &Path) -> Result<Option<ProjSummary>> {
     let is_subdir = if let Some(parent) = dir.parent() { parent.join("go.mod").exists() } else { false };
     if !is_subdir {
       let name = dir.file_name().and_then(|n| n.to_str()).unwrap_or("project");
-      return Ok(Some(ProjSummary::new_tags(name, dir.to_string_lossy(), true, &["go"])));
+      return Ok(Some(ProjSummary::new_tags(name, dir.to_slash_lossy(), true, &["go"])));
     }
   }
 
   if fname == "pom.xml" {
     let name = extract_name(file, |d| XmlScanner::new("project.artifactId").find(&d))?;
-    let dir = file.parent().unwrap().to_string_lossy();
+    let dir = file.parent().unwrap().to_slash_lossy();
     return Ok(Some(ProjSummary::new_file(name, dir, "pom.xml", "xml", "project.version", &["mvn"])));
   }
 
@@ -71,7 +72,7 @@ fn find_project(name: &OsStr, file: &Path) -> Result<Option<ProjSummary>> {
     let name_reg = r#"name *= *['"]([^'"]*)['"]"#;
     let version_reg = r#"version *= *['"](\d+\.\d+\.\d+)['"]"#;
     let name = extract_name(file, |d| find_reg_data(&d, name_reg))?;
-    let dir = file.parent().unwrap().to_string_lossy();
+    let dir = file.parent().unwrap().to_slash_lossy();
     return Ok(Some(ProjSummary::new_file(name, dir, "setup.py", "pattern", version_reg, &["pip"])));
   }
 
@@ -81,12 +82,12 @@ fn find_project(name: &OsStr, file: &Path) -> Result<Option<ProjSummary>> {
       .filter_map(|e| e.ok().and_then(|e| e.file_name().into_string().ok()))
       .any(|n| n.ends_with("*.tf"))
   {
-    return Ok(Some(ProjSummary::new_tags("terraform", file.to_string_lossy(), false, &["terraform"])));
+    return Ok(Some(ProjSummary::new_tags("terraform", file.to_slash_lossy(), false, &["terraform"])));
   }
 
   if fname == "Dockerfile" {
     let dir = file.parent().unwrap();
-    return Ok(Some(ProjSummary::new_tags("docker", dir.to_string_lossy(), false, &["docker"])));
+    return Ok(Some(ProjSummary::new_tags("docker", dir.to_slash_lossy(), false, &["docker"])));
   }
 
   if let Some(ps) = add_gemspec(fname, file)? {
@@ -104,7 +105,7 @@ fn add_gemspec(fname: &str, file: &Path) -> Result<Option<ProjSummary>> {
     let name = extract_name(file, |d| find_reg_data(&d, name_reg))?;
     let mut vers = extract_name(file, |d| find_reg_data(&d, version_reg))?;
     let dir = file.parent().unwrap();
-    let dirn = dir.to_string_lossy();
+    let dirn = dir.to_slash_lossy();
 
     if (vers.starts_with('"') && vers.ends_with('"')) || (vers.starts_with('\'') && vers.ends_with('\'')) {
       vers = vers[1 .. vers.len() - 1].to_string();
@@ -119,16 +120,16 @@ fn add_gemspec(fname: &str, file: &Path) -> Result<Option<ProjSummary>> {
       let vers_file = Path::new("lib").join(fname_pref).join("version.rb");
       if dir.join(&vers_file).exists() {
         let version_reg = r#"VERSION *= *['"](\d+\.\d+\.\d+)['"]"#;
-        let vfn = vers_file.to_string_lossy();
+        let vfn = vers_file.to_slash_lossy();
         return Ok(Some(ProjSummary::new_file(name, dirn, vfn, "pattern", version_reg, &["gem"])));
       } else {
-        warn!("Couldn't find VERSION file \"{}\". Please edit the .versio.yaml file.", vers_file.to_string_lossy());
+        warn!("Couldn't find VERSION file \"{}\". Please edit the .versio.yaml file.", vers_file.to_slash_lossy());
         return Ok(Some(ProjSummary::new_file(name, dirn, "EDIT_ME", "pattern", "EDIT_ME", &["gem"])));
       }
     } else {
       // Still other times, it's too tough to find.
       warn!("Couldn't find version in \"{}\" from \"{}\". Please edit the .versio.yaml file.", fname, vers);
-      return Ok(Some(ProjSummary::new_file(name, dir.to_string_lossy(), "EDIT_ME", "pattern", "EDIT_ME", &["gem"])));
+      return Ok(Some(ProjSummary::new_file(name, dir.to_slash_lossy(), "EDIT_ME", "pattern", "EDIT_ME", &["gem"])));
     }
   }
 
diff --git a/src/state.rs b/src/state.rs
index e2884e0..d98d550 100644
--- a/src/state.rs
+++ b/src/state.rs
@@ -11,6 +11,7 @@ use std::collections::{HashMap, HashSet};
 use std::fs::OpenOptions;
 use std::mem::take;
 use std::path::{Path, PathBuf};
+use path_slash::{PathExt as _, PathBufExt as _};
 
 pub trait StateRead: FilesRead {
   fn latest_tag(&self, proj: &ProjectId) -> Option<&String>;
@@ -65,7 +66,7 @@ impl FilesRead for CurrentFiles {
   fn subdirs(&self, root: Option<&String>, regex: &str) -> Result<Vec<String>> {
     let filter = Regex::new(regex)?;
     let root = root.map(|s| s.as_str()).unwrap_or(".");
-    Path::new(root)
+    PathBuf::from_slash(root)
       .read_dir()?
       .filter_map(|e| e.map(|e| e.file_name().into_string().ok()).transpose())
       .filter(|n| n.as_ref().map(|n| filter.is_match(n)).unwrap_or(true))
@@ -102,7 +103,7 @@ pub struct PrevFiles<'r> {
 }
 
 impl<'r> FilesRead for PrevFiles<'r> {
-  fn has_file(&self, path: &Path) -> Result<bool> { self.slice.has_blob(&path.to_string_lossy().to_string()) }
+  fn has_file(&self, path: &Path) -> Result<bool> { self.slice.has_blob(&path.to_slash_lossy()) }
   fn read_file(&self, path: &Path) -> Result<String> { read_from_slice(&self.slice, path) }
 
   fn subdirs(&self, root: Option<&String>, regex: &str) -> Result<Vec<String>> { self.slice.subdirs(root, regex) }
@@ -347,8 +348,8 @@ impl PickPath {
 }
 
 pub fn read_from_slice<P: AsRef<Path>>(slice: &Slice, path: P) -> Result<String> {
-  let path = path.as_ref().to_string_lossy().to_string();
+  let path = path.as_ref().to_slash_lossy();
   let blob = slice.blob(&path)?;
-  let cont: &str = std::str::from_utf8(blob.content()).chain_err(|| format!("Not UTF8: {}", path))?;
+  let cont: &str = std::str::from_utf8(blob.content()).chain_err(|| format!("Not UTF8 content: {}", path))?;
   Ok(cont.to_string())
 }