Strange Warning after Loading Blueprint

Hi Everybody,
I have a small problem:
I made a blueprint in which i store several Dynamic Material Instances in two arrays. I select one
of these array members by its index. After that a “select” takes one of two materials and plugs it as a target to a “set vector parameter” node. Everything works like a charm. But when i save the project and reopen it a warning appears. The blueprint is still working, but when i disconnect the setup it wont reconnect. So i guess the warning is a bug.
Thanks in advance for any help!
By the way: UE4 is awesome!

Hello,

Thank you for your report. We were not able to investigate this on the engine version you reported, but there have been many version changes to UE4 since this question was first posted. With a new version of the Engine comes new fixes and it is possible that this issue has changed or may no longer occur. Due to timetable of when this issue was first posted, we are marking this post as resolved for tracking purposes.

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