Call HOST command FROM FORMS 4.5 AND 6.0

I have a problem that I found out about yesterday, and have no idea how to fixe it.
I created a form to run on form 4.5.9.7 In this form i call up the host command, but it does not work properly, because by using the host oracle stops there until i close the application that i called with the host, it hangs there. But now it doesn't do it, once the host is executed, it continues the rest of the code that i have, which should not.
On the same computer i created another form on forms 6.0.5.2 and call the host command again, and finally it worked perfect! I mean until the program called by host command is running forms does not continue, it hangs there.
Could someone explains me that please, is there some patch I need on forms 4.5?
null

We converted forms from 4.5 to 6.0. Basically all you have to do is recompile the forms. but, the very first thing you have to do is recompile all the libraries. The forms will not work if you don't recompile the libraries first. So, open and compile the libraries in 6.0, then open and compile the forms in 6.0. They should then work fine. If they do not, try deleting and reattaching the libraries and compile again.
Good luck.

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