There is a workaround but it requires dealing with the registery so backup registery first.

1. press Windows Logo Key + R to open Run Dialog
2. Type regedit
3. Navigate to HKEY_LOCAL_MACHEINE\SYSTEM\CONTROSET001\MUI

there will be an entry for romanian language DELETE it. [for english the key is "en-US" in the navigation tree].

Repeat step three for

HKEY_LOCAL_MACHEINE\SYSTEM\CONTROSET003\MUI

this will make SP1 installer to see only English Language there.

hence it will continue installation.

and

HKEY_LOCAL_MACHEINE\SYSTEM\CURRENTCONTROSET\MUI