Hello! Wonderful things you make. I have fresh cleanly compiled Carla on Slackware (Porteus, to be precise), and when attempting to run it, I get this error:

Traceback (most recent call last):
File "/usr/share/carla/carla.py", line 2338, in
if argument.startsWith("--with-appname="):
AttributeError: 'str' object has no attribute 'startsWith'

I decided to try commenting out the lines that contain "startsWith" in carla.py, which actually totally worked, and Carla works great standalone but it has very strange behavior when launching from NSM after my little hack (each time it's launched it launches an extra instance of itself, and each time after that it launches an additional one, so after opening and closing the session a few times I have 10 Carlas running.. apparently that line is important!)

Have any idea what I can do?

Here's my versions of things:
python3-3.3.0
sip-4.14.7 (python3 version)
PyQt-x11-gpl-4.10.2 (python3 version)