i faced the same problem. i think the proplem is refreshing and targets updating. So, Firstly you should comment line, line 62.
then open the targets file and goto stm32f0 and stm32f4 open .m file at the both targets files. You will see a code like updateplugin, i think at 75. line. Comment lines too (both target files). then save all files and run it.
finally, the installation is finish, go to simulink -open the library browser and refresh or click fix link. Choose second option(it was starting with generate..)
However, İ think Aimagin.com is updating the waijung 1 program file. So maybe the problem will be solved, in the new version