Is it confirmed that in CREO 7 the GCRI methodology is not supported anymore ?
I can't find the "readnewermodels.dll" file.
Correct. Because multi-body was introduced in Creo 7, GCRI will no longer work with any earlier versions.
Starting in Creo 7.0, GCRI is removed and no longer supported due to multibody functionality introduced in Creo 7.0
What is actually the current state of affairs here?
Has anyone already had experience with Creo 8.0? Can files created with Creo 8.0 be opened with Creo 7.0?
I am also wondering if there is an update to this. I need to open a CREO 8 file in Creo 7. Does anyone have that solution or is it still the same? Thanks.
PTC is working on a new solution for Creo+ backwards compatibility. I can't find an article on it but they have mentioned it at conferences. Its possible that it may also work for Creo 8,9,10. I not aware of a tool that is available today though. You could open up a ticket with PTC and ask.
Have you tried to create a neutral file in Creo 8 and open it in Creo 7?
Not much better than using a STEP or IGES file, but any of those 3 methods should work.
The successor of GCRI is probably ReleaseLink.
ReleaseLink, however, is only available from Creo 184.108.40.206 and later versions.
There seems to be a break between Creo 7.0 and 8.0, however, and to my knowledge there is no convenient way to open Creo data created with Creo 8.0 or newer in Creo 7.0.
More details can be found in PTC article CS373979.