Ruby interpreter (CUI) 1.9.2p180 [i386-mingw32] has stopped working (I am not using MySQL)

Question

My ruby interpreter is crashing on almost every page request with the following error: Ruby interpreter (CUI) 1.9.2p180 [i386-mingw32] has stopped working

I am not using

Answer 1

I had this error after precompiling files for heroku. After I deleted them from public/assets folder everything worked fine.