This is a new installation of freestyle on Windows 7 (HP Pavilion p6531). The program seems to be ok but each time when I start it then an error message appears which is:

Error:
Heidi Module Load Error
The configured Heidi driver cannot be loaded. Switching to default software driver.
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Hi there,
There are various problems regarding AutoCad Freestyle, one of them is the Heidi driver error. This particular error takes in many forms like “Heidi Module load error” or “The configured Heidi Driver cannot be loaded-switching to default software driver.
The proper solution for this particular problem is to do the following, and hoping that it will solve your problem as this has been very effective in eradicating this error.
The solution is to disable Hardware Acceleration by starting Freestyle with the /nohardware switch, to do this you have to follow these steps.
"C:\Program Files\Autodesk\AutoCAD Freestyle\acadfs.exe" /nohardware
Hope it turns out well for you