Runtime errors occurring in the 1.8 multiplayer lobby

[TelekineticWitch]

Every now and then, when I log onto the lobby, I recieve messages that say ''This program has requested the Runtime to terminate it in an unusual way. Please...'' or ''Assertion failed...''. The the whole game exits and I have to again start it over.

This happens more and more frequently now. Any help? Thanks in advance.

[ilor]

Please do include the file and line information (the bit of text after "assertion failed") if you get an assertion error, it's very helpful in tracking down the bug, and in checking for fixes.

[TelekineticWitch]

Here is the screenshot of a recent error found:

http://img521.imageshack.us/i/assertionfailedmsg.jpg/

After clicking Ignore, this came up next:

http://img220.imageshack.us/i/2ndassert ... edmsg.jpg/

Then the game exited when I clicked Ignore again.