PD Bug - Can't add guns or cars to ranks or divisions

[Osborn]

Date and time (provide timezone): 

Character name: Samuel Osborn

Issue/bug you are reporting: When trying to add a gun or a car to a rank or a branch, we get the following error: http://puu.sh/APdEJ/1c02541474.jpg

Evidence, notes worth mentioning, steps to replicate: 

[Osvaldon]

Will be fixed in the next patch.