Dear
Hi, problem solved for me following this steps:
1. Uninstall SAP GUI 7.4
2. Delete folder c:\Users\Leonardo\AppData\Roaming\SAP
3. Install SAP GUI 7.4
4. Create connections entries from scratch.
or
I too have the issue.
It worked fine initially but today it seems corrupt.
My workaround is to remove:
SAPUILandscape.xml
SAPUILandscapeGlobal.xml
Keep saplogon.ini and then start sapgui which then generates the SAPUILandscape.xml files again.
Will try to set a read only flag to prevent them from being destroyed until fix from SAP comes.
Regards