When some Exe was compressed by Aspack..etc,
if we use "madRes" to change it's main-icon, we will
get a "Access violiation message..".Are there some
problem with "compressed execution"software?
Please try using the Resource Hacker. Can this freeware tool edit the resources successfully without negative side effects? If it can, then it's probably a bug in madRes. If Resource Hacker fails, too, then I'd say the compression somehow products an incorrect resource section.