Imprudence Viewer 1.3.0 Beta 3 has a serious bug. Appearently this is a difficult one to fix as it involves some Linden Lab problems. Whatever, there is a fix placed in Beta 4. Get your update now.

Problem: Warning: Serious bug in 1.3.0 beta 3 on Second Life

If you are using Beta 3, DO NOT rez inventory items while in build mode. Objects may have their permissions messed up. This is especially true for no copy items. It can render them useless.