I found the file with a problem.
It was RJFR's Scenery of free add-on in "1002 Base" folder.
When two "bgl" files related to this were disable, GSX could function normally.
I solved the problem by having deleted the scenery.
I think that "FSX Booster 2013" and "fsx.cfg" were not related.
(It is running now.)
Thank you for your cooperation.
GSX is so cool!