Some Tools are not displayed in their toolbars, the buttons are there but are blank.
A error message is also displayed on the screen.
For Example, should some of the "Dimensions" tools not be displayed correctly, as described above, the error message would be:
"Unable to load/create dialog item of type 'IconCmd', id = 156 from dialog "DIMCREATE".
This issue could be caused by a corrupted "ustn.m01" file.
Rename the existing "ustn.m01" file - i.e. to "ustn.bak" - and the tools icon should be restored at the next MicroStation startup.