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Just in case anyone will face a similar problem.
Here is the SW support replay to this issue
first, do you have CamWorks software on your computer? If that is the case (and even if it isn't), the error you are getting may be caused by sx32w.dll, a DLL shared by many applications. SImulationXpress by default uses this DLL located in the \COSMOSXpress. However, if another software, CamWorks for example is installed, then a version of this DLL may be found in Windows\System32.
A solution which has worked in the past is to locate sx32w.dll in Windows\System32 and rename it to sx32w.dllold and copy and paste sx32w.dll from the \COSMOSXpress folder to the System32 Folder."
I searched for the file and did not have it in Windows\System32 from the first place . I found a version in sw2009 sp3 downloads
And copied it in Windows\System32 folder. problem solved