Im getting this error and force close on one of my Heros when I try installing any of my apps on any of the 2.1 roms. Im coming from Fresh 1.1 and following the same procedure I used on my other Hero on which the market is fully functional. Ive wiped everything over and over and cleared data on anything that looked like it at to do with the market. I also tried fix apk mismatches from recovery. Short of RUU which Id like to avoid if at all possible Ive tried everything else I can think of. In searching I have come across this error code on other android phones, but nothing on the hero and nothing specific to trying to install apps. So has anyone else seen this? And would RUU do anything a full data wipe didnt already?