SEP 12.1.4100.4126 not compatible with Win 2008 Std x64 ?

Hi,

Just tried to install few times (standalone, push install from SEPM, export package from SEPM) but all failed.

Finally install 12.1.2015.2015 only.

Then I also trided to push 12.1.4100.4126 over 12.1.2015.2015 to try to upgrade it but also failed.

Please help !!

Thanks