ksong its best to restore to 1.1.4 before the jailbreak so that you have no problems uninstalling things. but there is a solution for this.
1. go to /system/library/coreservices and copy the systemversion.plist file to your computer. (if you have winscp you can directly modify this file so yo wont need to copy it to your computer)
2. using word pad change the 1.1.4 to 1.1.3 and replace your old systemversion.pist with the new modified one.
3. open installer and uninstall.
4. this works for mostly every other app you are having trouble uninstalling or installing, so when your done change the plist back to 1.1.4
hit thanks if this helps
