in the PID we have valves with flanged end connections. At only one PC the the flanges are not shown in the drawing. When I set the end connections to 'flanged' again at this PC I can the the flanges....
I'm sorry for the late answer because of Public holiday and one day vacation.
It sounds here that there is something saved in the local data cache on one local machine. So double click on this machine the PnPLocalDataCachePurger.exe which you will find directly in the install direction of Plant 3D. This will delete your Persistent Local Data Cache here. Afterwards just audit your project.
Purging the local data cache will not delete, remove or corrupt your projects and the cache will rebuild again as soon as a particular project is opened. You can also consider running this tool when you see low disk space on your C drive. This will purge the local cache, so that you can release disk space usually used by completed projects. After PLDC has been cleaned, opening the project and drawing may take longer than usual as the cache will have to be re-built. Usually it will be the first time project is being used after PLDC purge.
PLDC = Persisten Local Data Cache
See also more information here:
unfortunatly that didn't help. How does PID control the display of the end connections? I think there is no special layer for that...Can I switch the visibility of the end connections in different drawings (the end connections shall be seen in a PID but not in a PFD, but there are the same valves in both drawings)
Our next problem is that on a PC where you can see the end connections, you can't see the end connections in a drawing where the original drawing is inserted as a xref.
Thanks in advance
The end connection is on the same layer as the valve: Mechanical. So if this layer is turned off the valve and the end connection will be turned off together. If you have attached a drawing as a XREF the name of the layer is by default '<name of the xref'ed file>|Mechanical'. So this can be turned off but you should not see the valve, too. What you mean with PFD? Do you mean P3D?
Please, try the following: Delete the content of the following folder:
Note: This is the path for 64bit machine with .NET-Framework version 4.0. If you use 32bit or version 3.5 the path is a little bit different.
If this doesn't help, please, let me know. I will create a FTP-site for you. Then you can send me your project with some snapshots.