Cydia iPhone 4 4.2.1 greenpoison

[Madcamper]

I Had my iPhone 4 4.2.1 tethered jailbroken a couple weeks ago and greenpoison untethered came out and it worked fine after a little fiddling. All of a sudden, this afternoon I tried opening cydia and it loads for a brief moment and then closes. Only weird thing that has happened on my phone today was I had folder enhancer app installed and I got a "trial version expired" message, it restarted my iPhone into safe mode until I uninstalled the app from cydia. If anyone else has had this same issue please help! Thanks in advance.

[Fantapants]

Hi I have just jailbroken my 3GS with greenpois0n but cyidia hasn't been added ? Was this the same for you ? I need to unlock my phone for any sim card thanks dude