Powerino73's picture

ATI Catalyst 10.7

Yesterday i installed in my system the ATI Catalyst driver 10.7, since that moment opentk doesn't work anymore..
Any suggestions other than install previous driver version?


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zahirtezcan's picture

After the Fiddler fixed this problem I updated local and tried to run my application, there was a critical error but i did not have time to struggle so I delayed. Today I investigated the problem and found that any function call like Functions.XXX failed (MethodAccessException). Attached shows the first exception, but I tried to mangle with the debugger by step through and setting values but no help.

I tried to set SecuritySafeCritical attribute to Functions or SuppressUnmanaged... attribute to EnumDisplayDevices function but both have failed

Using: Win7 32 Bit, ATI HD 4650, Catalyst 10.7

Edit: There were no issues before Catalyst 10.7 or 1.0 branch code (I switched from rc1 to 1.x-dev after Catalyst installation)

security_critical.jpg183.02 KB
the Fiddler's picture

If you are compiling with VS2010 and/or for .Net 4.0, try adding NET40 to the project define settings. This should take care of the MethodAccessExceptions.

zahirtezcan's picture

Thank you very much! Solved the problem

Powerino73's picture

Hi i download the last svn release i compile with vs2008 now i have the exception but it doesn't work!
How to solve the problem?

c2woody's picture

now i have the exception

What exception?


Hi i download the last svn release

Be sure to download the 1.0 branch, NOT the trunk.

Powerino73's picture

Thanks i downloaded the 1.0 branch but Opentk.compatibility doesn't compile in vs2010!
I checked the

#if NET40
[assembly: System.Security.SecurityRules(System.Security.SecurityRuleSet.Level1)]

and insert the Net40 define...but doesn't work!

Any suggestions?

c2woody's picture

and insert the Net40 define

Verify that you defined it in the correct assembly and that it's all upper case.