This is really weird because I've had no problems using Catlog on SlimBean 4.3 , AOKP 4.3 and CM10.2. I've also used franco.Kernel with those ROMs and Catlog is always working. Can you generate a log at all using adb?
LG Nexus 4 E960 16GB (Mako) and Asus Nexus 7 32GB (Tilapia)
rev_11 (mako) and PR (Tilapia)
MAKO Z30d (Mako) and 4.23 (Tilapia) (Both Unlocked)
M9615A-CEFWMAZM-2.0.1700.97 (Mako) and 1231_0.18.0_0409 (Tilapia)