See do one thing
Go to the folder where ur A3mania Files r stored
then Delete "Updater.bat" file frm ther
and Also Delete "A3Client.exe" file frm ur A3 folder
then go to the "Data" Folder
there will be files by name "PC_(smthing)"
Delete all files starting frm that....!!
now run "A3.exe" and put it on Full check
it will download sm files and u will be able to play A3 again
