Unhandled exception when trying to download Mod after fresh SL install

[MaDDoXbr]

OS: Windows 10
SL version: 0.269

• Repro steps:

After a fresh install (delete %appdata%/SpringLobby folder first), in the Official Server, Join 'TA Prime - Main Server' and accepted to download all files. That's when the error shows up, screenshot can be seen here:
https://drive.google.com/open?id=1-YrWHfx-OfxvmezK7yvLM1SkUULOh80d

Interestingly, if you click on 'Ignore' the actual mod download does work, although most users click on 'Abort' (which force-closes SL) when they spot that mod download error - that's also the default option there.

[abma]

can you provide springlobby.log with this error included please?