Hello Arnold,
running the program 'nwcheckworkstation' from the run menu will generate an installation check.
If there are errors,then reinstall the GUI.
If no errors,
1) Install the latest patch (17)
2) If issue persists, download and install 7.30 GUI patch 4 - I recomend this because 7.20 is
not supported anymore since April of this year.
3) If you still have the issue after 7.30 installation, open a message in BC-FES-GUI,and
ask the support engineer for a sapmats link to upload the result of the note
http://service.sap.com/sap/support/notes/1387962
For support,a reproducable example of the issue would be desirable.
Best Regards,
Jude