faulting module clr.dll, version 4.0.30319.526

My Application intermittently crashes with following exception in event log.

.NET Runtime - Application: zzz.exe
Framework Version: v4.0.30319
Description: The process was terminated due to an internal error in the .NET Runtime at IP 7927F2AA (79140000) with exit code 80131506.

.NET Runtime 4.0 Error Reporting - Faulting application zzz.exe, version 4.8.30521.1, stamp 56d044f5, faulting module clr.dll, version4.0.30319.526,
 stamp 4eb3b6b1, debug? 0, fault address 0x0013f2aa.

It is running on Windows XPe SP3.

This issue is described in following article:

https://support.microsoft.com/en-us/kb/2640103 however I have installed this hotfix and still get same exception (see clr.dll version above)