Board Thread:General Discussion/@comment-16158363-20130821211706/@comment-14284922-20130822131844

So i tested a few things:

1. Built an Ice Crystal on PC and was unable to complete it on PC. 2. Upon switching to mobile, I was able to complete the Ice Crystal. 3. Built a Dark Crystal on Mobile and was able to complete it on PC.

It appears that this issue does exist only on the PC version at this time and can be avoided by either building or completing the item on the Mobile Version.

Hope this helps.