i don't know if this was discussesd before but putting a period the replay name causes it to not show up in the replay list. I imagine it confuses it with the extension.
yeah, that's a bug - or actually not really a bug, but rather just a lack of a proper error message :)
It's because that some characters are not allowed in replay names - and as it is now it will not save the replay if one of these characters are included.
I'll try to do something :P