Problem adding a static label to a GUI

Hi guys I've a problem when I add a label to a tab of an object GUI.
Every time I try to add a static label and set a string by windows title attribute I get the following message

FlexSim 7.5 has stopped working

A problem caused the program to stop working correctly.
Windows will close the program and notify you if a solution is
available.

Any idea? Thanks in advance for Your support.

Please post your model with steps indicating what you are doing (or link to a video that shows what you are doing).

Adding a static label with a windowtitle to a panel in a tab control seems to be fine in FlexSim 7.5.4.