debug release fail

Hi guys I'm getting this error when I try to debug do i need to have both certificates on the Key folder? Parsing code. (0.00s) Building folders structure. (0.06s) Compiling code. (0.01s) Building designer app. (0.04s) Building Xcode project. (0.30s) Preparing project for...

I have a tablet pc . One compile and run the code. Generate at log this but run well. Class not found: b4a.example3.miedit, trying: MiEdit.com.miedit Class not found: b4a.example3.miedit, trying: MiEdit.com.miedit The other pc with same version of B4A generate error and crash, Only when run...