The most common cause of a "Data Error" is an incomplete or corrupted archive file. If the download was interrupted, the internal file structure of the zip or rar might be broken.
: The mod file itself may be corrupted. If you can open it with a tool like 7-Zip or WinRAR and see errors, you should delete the download and try again. Manual Installation Workaround If the automated installer continues to fail: mo2 extraction failed data error exclusive
Sometimes MO2 itself has a dangling handle on a file due to a previous failed extraction. The most common cause of a "Data Error"