PROBLEM FIXED!!! :D
Thanks to RafkeP for workin on the solution and fix the problem!!!
Unfortunally I wasn't able to upload the fixed file, cause a forum's error occours Code:
Upload Error: Could not upload Attachment to ./files/Name_Plugin_V5_xxx.zip
where "_xxx" is a 3digit suffix added by the forum (replace xxx with 3 ?random? numbers)...
It seems this error appens to everybody in last days.... 