Add folder error

[jpdcarv]

What happened?

Hello :)

When I try to add a folder to my solution (Add --> Existing folder), the programs returns an error:

Again, many thanks for this top IDE :)

Steps to reproduce

1. Open project
2. Right-click on solution
3. Add --> Existing folder

Expected behavior

Program returns error

Designer backend

LibreWPF

Environment

OpenDevelop 5.5.8

Relevant log output