Openblocks ver.: 1.3-snapshot-475
OpenModsLib ver.: 0.6-snapshot-245
Forge version: 10.13.2.1235

i've just updated from snapshot-433 where it was possible to place tank's, but in the newest snapshot it's no longer possible.
If you pick up already placed you can't place those tanks either.

Tested on single player with only the above 3 installed.

#535 duplicate, update OpenModsLib