create subscription problem

[hamed23100]

In plesk 11 with os windows 2012 when i try to create any new subscription i get following error:

Error: Unable to update domain data: Execute websrvmng --add-domain "--domain-name=testDomain123.com" failed with error code 1:

what should i do? this problem happen suddenly without any changes by us,

 

[hamed23100]

Issue solved fast by parallels support, their solution:
The issue was cased since websrvmng was corrupted and having zero size. I have replaced the binary and not domain creation is working fine.