Then drag just the export folder from the archive and drop it over the one in your installation, overwriting when asked, so the files are then known to be fresh and try to export again after restarting Apache and MySQL.
Well at least we now know it was not a corrupted file and we can move on.
Is this a new XAMPP installation?
If so or you don't mind uninstalling then try a different installation method by following these instructions: viewtopic.php?p=179699#p179699 You can use the zip file you download previously if you wish.
This method often fixes issues as it is sometimes the installer that plays up with some Windows versions and will be replaced in the next release.
Just to add that if you stop all the xampp components and uninstall any services in the control panel and then exit the control panel there is no need to delete the xampp folder, simply rename it to xampp_old.
Then extract the new xampp folder as described in the instructions.
This way you will still have your older installation to be able to copy over your own files etc. - sort of a sophisticated backup of your older installation.
thank you for the help guys, i fixed it! thnx to your assistance! ^^ when i reinstalled xmapp i used a different version than the 1 i had installed. so i redownloaded the zip of the same version and everything worked like a charm! i can sleep again ^^