confusing on netBeans 6.8
I create a project a year ago on netBeans 6.1, and every thing goes fine.
now I'm trying to rebuild another similar project, I began with netBeans 6.1 and it work fine. when I decide to upgrade & use 6.8 I face alot of difficulties: (
first: when I go to project's properties found many devices choices some work will with my project & others I have these error :Corrupt JAR, error while reading: xxxxx.class
Execution failed with error code 1.
also I face error with . gif pic , why is that .? its work fine with my 1sf project on 6.1 ??
really I'm confuse plz help me :(