TerraMaster will not upgrade to newest server manually

Trying to update Intel 64-bit PlexMediaServer-1.26.0.5715-8cf78dab3-x86_64.tpk manually but I get an “Error: -601, Message: File Extension error.” message" Have tried multiple times and rebooted TM server. I have done previous updates with no problems. Is there a problem with this update package?

Thanks

OK now is working, Windows 11 download was corrupting my download. I used Firefox on Linux Mint instead to download checksum was correct now. Installed like a dream.

Thanks