market disappeared

[Guest aidanj]

hello,

earlier on today, i turned off my phone to delete some non-android files from my memory card. once done, i ejected my memory card successfully from my pc, and put it back in the blade. i then turned the phone on, and all of my downloaded applications have vanished, which doesn't bother me, as i backed them up with titanium backup. however, for some odd reason, the market application has vanished from my phone. i'm running paul's r3 rom, and re-installed it, and the market is still 'gone'.

any help guys? thanks.