✈ Pre-Flight checks

• I don't have SentinelOne antivirus installed (see above for the solution)
• I have searched in the issues (open and closed) but couldn't find a similar issue
• I have searched in the pyRevit Forum for similar issues
• I already followed the installation troubleshooting guide thoroughly
• I am using the latest pyRevit Version

🐞 Describe the bug

under the new C# Loader: locating user scripts by referencing windows environment variables like %USERPROFILE% or %APPDATA% fails to load, this is exclusive to the new Loader. disabling the loader will solve the issue.

⌨ Error/Debug Message

Cannot Find C:\ProgramFiles\PyRevit-Master\%USERPROFILE%

♻️ To Reproduce

1. OPEN pyrevit-config.ini
2. add a user extension to the list that contains an environment variable such as %USER PROFILE%
3. reload
4. the extensions in this location won't be loaded

⏲️ Expected behavior

this behavior is resolved by reverting to the older / legacy loader.

🖥️ Hardware and Software Setup (please complete the following information)

Revit 2024-2026
PyRevit 6.1.0

Additional context

No response