Installed Retroarch, no longer works?

I successfully installed retroarch on my ipad mini (up to date software), and ran the PS emu successfully as well. I have since restarted my ipad and closed the program, and now when i try to open the app, i get a black screen and the app shuts down quickly. Ive tried setting my date back to 2012 but no luck. Any help would be great!

I tried uninstalling it and reinstalling it, but now when I roll back the date from May 28th 2013, to Today, the file says the provisioning profile has expired.

You installed a web version, right? If so, you have to jailbreak your iPad and use retroarch, repo.

backup retroarch as ipa using iFunbox. Set your device to date 2012 then install it again above the old one. Run the cores that you want to use before you fix the date to current date. Double tap the home button, then choose retroarch .since the the provisioning profile has expired on May 15th 2014, you need to change the time back may 14th 2014 Everytime you close Retroarch from running in background. when you reboot your device you need to reinstall it again. I know it’s kind of headache but nothing else to do with version of retroarch. I have a version retroarch 1.0.0.2.1 that has no issue no need to change the time, reinstall it, has zero crashes and no jailbreak requires but you need to resign it.

But then, how can i use Dynarec?

I use pcsx_rearmed_interpreter_ios.dylib so no dynamec. I have iPhone 5s so it runs in fullspeed + enhanced resolution enabled. This is just good for A7 devices, all cores run in fullspeed.