The error made when creating weird gloop is that mud runes, not rune or pure essence, should be ground to create the glue. The resulting bucket of weird gloop has no use, but can be emptied to retain the bucket. Creating weird gloop prompts the message, "You mix the rune dust into the tree sap. It doesn't look quite right."
As of 12 September2014, there are just over 2,700 buckets of weird gloop in game, with over 90% of the supply being owned by just three accounts.