The Microstran, Limcon and MStower programs utilize a Microsoft True Type font called MS LINEDRAW regular for the text on various reports and output. If that font is missing from the operating system then the output may appear corrupted, showing Windings or Symbol fonts, for example.
Reinstalling the program should restore the MS LINEDRAW font. If not, the font can be downloaded here: MS LINEDRAW.TTF
Just save the font to the local hard drive and double click the file to install the font (using Windows 7)