During the quest "Mudlap and the Mosslog", the player is tasked to command three special mudcrabs to Mudlap (TR_m1_q_57_Mudlap). This is handled by the script TR_m1_q_57_SuperCrabScript, which does not work as intended. It works fine for the first two mudcrabs, and then I got the usual "The Feather Spear vibrates in your hands as it locates a new target." message, but it failed to locate a new target. I presume the script just stopped, because I couldn't get any further messages. To proceed the quest, I had to restart the supercrab script, which triggered the journal entry for the next quest stage, but without spawning any new crabs. It also had the side effect of crashing the game during most attempts, and caused problems with the part where the mudcrabs attack (I had to manually add an extra mudcrab to get it to work).

I would also suggest to make the Mosslog (T_Com_UNI_Mosslog) more visible. Currently, it blends almost perfectly with the environment, making it almost impossible to spot. I wasn't able to detect it with a Detect Enchantment spell either, but that could have been due to the combination of mods I am using. The mundanity of the object should be reason enough to leave it untouched, there is no need to make it nearly invisible. I suggest either changing the texture so it contrasts with the terrain, or (better) to move it so it doesn't just rest on the bottom of the pool, not so it immediately catches the eye but enough so one would spot it if looking for it.

And well, IMO this quest is rather silly, so I wouldn't mind if it would be replaced by another one at some point.