Problem with saving to C

For some time I have problems with saving to main hard drive.
I am absolutely positive that no other file is opened and it happens to various files.

Hello - are you using Grasshopper with a Hops component? If so, please update Hops via PackageManager.


Installed? YES
Using? NOT YET
It seems Hops affected saving without droping it into GH canvas. Seems to be working fine now.