dxi convertor stuck my cubase 7.5

Hi
i use some dxi plugins that are very old and dont have in vst vesion
for this i use dxshell.dll plug .

on cubase 7 its work perfect
on cubase 7.5 when i open the software and its start to scan the plugins
this plug drop the software and stuck it .

what is the reason what can you suggest me to do ?