If this is an issue for you (not sure if it's meant to be rather a bug report), I'd try to clean the drdata directory of the slave(s) from textures which seem not to be linked "correctly" in the original scene. In that case the dr system sends those assets to the slaves. But the files themselves are not hashed afaik (not entirely sure about that, just guessing what happened), so maybe the slave misses the texture change. You could of course always give the new texture a new name, should fix it as well.
Good Luck