Errors saving projects with 4.27, .tmp files created

Hi,

Anybody else getting errors when trying to save a project? If not I assume it's my screwy Win11 installation. Either way, I need a new computer...

When I try to save a project I get an error message (just a popup with something similar to "Can't save [filename]". A .tmp file is created at that time, and if I change the extension to ".aren" it seems to run ok. It also seems to incorporate the new project structure (although I can't seem to get the "save columns" switch to work as yet, even though the new column shows up in the .aren file - I still get the original column configuration).

Best,
DF