If your Wildtangent games were working before it may be the d3dx9_37.dll has become corrupt.
So, two things to try;
1) Run the Direct X Web installer. This will install any 'missing' DX files, so if the file is in fact
missing (error messages are not always exact) the Web Installer will install one.
If the file is corrupt it will not be fixed by the Web Installer as it does not overwrite the DX files.
Download DirectX End-User Runtime Web Installer from Official Microsoft Download Center
2) If the file is corrupt then you can delete the file from System32 & sysWOW64.
Navigate to your Windows Folder > C:\ Windows \ System32 and look for the d3dx9_37.dll .
Delete this and then do the same in the Windows \ sysWow folder.
Run the Web Installer and it will install a new d3dx9_37.dll into each folder.
b) - You could also download the full Direct X runtime installer package. This will overwrite
all the existing DX files.
Download Details - Microsoft Download Center - DirectX Redist (June 2010)
If you continue having problems you may need to invistigate what the dish hopper is
doing that may be causing this problem. Maybe a topic for another forum.