4.2GM jailbreak on 4th gen didnt work for me?

[cRuNcHiE]

I've never had a problem before ,jailbreaking or backing up SHSH etc

But, this time when i jailbroke my Ipod touch 4th gen using redsn0w, it just left me with a white cydia icon and when i touch it, it doesnt load.

I've googled it and cant seem to find any other mention of the problem?

I tried restoring to 4.1 and upgrading/jailbreaking again but the same thing happens.

Has anyone else had any joy?

 

[Night Spring]

It's quite possible Cydia itself needs to be updated to work with 4.2.

After all, the dev team told us that only developers should jailbreak 4.2 right now.