diff --git a/scripts/update_app_environments.jl b/scripts/update_app_environments.jl
index 4dc14e3..556ab5d 100644
--- a/scripts/update_app_environments.jl
+++ b/scripts/update_app_environments.jl
@@ -22,3 +22,15 @@ end
 version_path = normpath(joinpath(@__DIR__, "../testprocess/environments/fallback"))
 mkpath(version_path)
 run(Cmd(`julia +nightly --project=. -e 'using Pkg; Pkg.develop(PackageSpec(path="../../TestItemServer"))'`, dir=version_path))
+
+function replace_backslash_in_manifest(version)
+    filename = joinpath(@__DIR__, "../testprocess/environments/v$version/Manifest.toml")
+    manifest_content = read(filename, String)
+
+    new_content = replace(manifest_content, "\\\\"=>'/')
+
+    write(filename, new_content)
+end
+
+replace_backslash_in_manifest("1.0")
+replace_backslash_in_manifest("1.1")
diff --git a/testprocess/app/testserver_precompile.jl b/testprocess/app/testserver_precompile.jl
index c73e07d..b439d09 100644
--- a/testprocess/app/testserver_precompile.jl
+++ b/testprocess/app/testserver_precompile.jl
@@ -32,7 +32,7 @@ let
         if has_error_handler
             global_err_handler(err, bt, Base.ARGS[2], "Test Process")
         else
-            Base.display_error(err, bt)
+            rethrow(err)
         end
     end
 end
diff --git a/testprocess/environments/v1.0/Manifest.toml b/testprocess/environments/v1.0/Manifest.toml
index 57d88c4..453de2d 100644
--- a/testprocess/environments/v1.0/Manifest.toml
+++ b/testprocess/environments/v1.0/Manifest.toml
@@ -67,7 +67,7 @@ uuid = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 
 [[TestItemServer]]
 deps = ["Base64", "Dates", "Distributed", "FileWatching", "InteractiveUtils", "LibGit2", "Logging", "Mmap", "Pkg", "REPL", "Random", "Sockets", "Test", "UUIDs", "Unicode"]
-path = "..\\..\\TestItemServer"
+path = "../../TestItemServer"
 uuid = "1076c532-7f93-4758-ac65-93afa8eae143"
 version = "1.0.0"
 
diff --git a/testprocess/environments/v1.1/Manifest.toml b/testprocess/environments/v1.1/Manifest.toml
index 65cbea1..7c32749 100644
--- a/testprocess/environments/v1.1/Manifest.toml
+++ b/testprocess/environments/v1.1/Manifest.toml
@@ -62,7 +62,7 @@ uuid = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 
 [[TestItemServer]]
 deps = ["Base64", "Dates", "Distributed", "FileWatching", "InteractiveUtils", "LibGit2", "Logging", "Mmap", "Pkg", "REPL", "Random", "Sockets", "Test", "UUIDs", "Unicode"]
-path = "..\\..\\TestItemServer"
+path = "../../TestItemServer"
 uuid = "1076c532-7f93-4758-ac65-93afa8eae143"
 version = "1.0.0"