The window was destroyed during method execution.

A weird error appears when i start my network-suite-jobs. After opening the application on the remote machine, testcomplete/testexecute should press a button on the main menu, but then it stops the testing (from my sight without a reason). The strange thing is, that this is happening randomly - sometimes everything works fine, but from time to time this weird error comes up (only on two from ten tests):

"The window with the handle 0x0001042e does not exist. Most likely, this error occurred because the tested object (window or control) or its parent object was deleted or recreated during the method call or before it. For instance, the window could be destroyed or recreated after you stored the object reference to a variable and before you called the object method through this variable. If the object is recreated, then to avoid the error, check the object's Exists property before calling the method, and if the object does not exist, obtain a reference to the new object."

Tested object: Aliases.xxx.DesignPointDlg_Gas_Comp (Sys.Process('xxx').VCLObject('DesignPointDlg'))