When I use the CheckForDuplicateAppInstance function with the option to ACTIVATE_OTHER_INSTANCE if a duplicate exists, the other application displays the last panel that was loaded using the LoadPanel function, not the last panel that was displayed using the DisplayPanel function as I expected. This results in "odd" panel being displayed when the original instance of the applicaiton is activated. The code I use is: // Determine if this application is already running CheckForDuplicateAppInstance (ACTIVATE_OTHER_INSTANCE, &duplicateInstance); if (duplicateInstance == 1) { return 0; // exit this instance } If I use the same code with the first parameter set to DO_NOT_ACTIVATE_OTHER_INSTANCE, the "odd" panel is not displayed, however, if the original instance is not activated as I would want it to be. Is this a "bug" in the CVI or am I doing something wrong? I am using CVI 6.0 on XP professional service pack 2.

LabWindows/CVI

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Thank you. If you develop a patch or work-around, please let me know. For now I use DO_NOT_ACTIVATE...

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