update can not install lasercad 6.88 in coreldraw X5

[waltfl]

Hi all
I had a crash and needed to re install lasercad v. 6.88, but I can not install the version for CorelDraw there comes the message
" please close CorelDraw and try to install again". but CorelDraw is completely closed. I could install the version without any other connection.
this is a question for marco:
I can install the version 6.81 and it works wqith corelx5 is the version 6.88 just for corel x6?
what can I do?
greetings
waltfl