I've been using Lyx (on windows) to write my thesis and for some reason tonight it just stopped working. If i try opening a new file, no layouts are available. I am able to open my thesis file, but I can not compile it (PdfLatex...). Any tips on resolving this would be greatly appreciated.
Update (this was the code that had to be changed as per the link in my comment - the 100 was previously a 65):
\edef\fmtversion{2005/12/01}
\iftrue
\def\reserved@a#1/#2/#3\@nil{%
\count@\year
\advance\count@-#1\relax
\multiply\count@ by 12\relax
\advance\count@\month
\advance\count@-#2\relax}
\expandafter\reserved@a\fmtversion\@nil
\ifnum\count@>100
\ifnum
(starting with\edef\fmtversion
)?