Problems Migrating from PowerBuilder 5 to 10.5, including PFC.

I  am doing the migration of an application from version 5 to 10.5, but I'm having problems with the PFC .

I have created a workspace with the existing application, a target .

If I migrate the application completely , including the PFC , I get errors that must be corrected . This is fine .

I want to use the 10.5 version of PFC . When I replace the PFC PBLs that were migrated , with version 10.5 , PowerBuilder tells me that i must migrate again. I Migrate again, however , I get the following error "could not add target Because the target xxx.pbt Could not be created. " .

I had already checked permissions problems on the boards , and reviewed cases of others who have had a similar problem , but I could not solve my problem.

How you make me recommend this migration ? I must make some changes in my application to update and use the newer version of PFC and not version 5.0 ?

Thank you.