You do not need to doctor! At least not from what I saw...
I had 1.x installed and did not read anything but just installed 1.2 over it. That did not work... so I had a closer look. To get a "clean" TP I recommend the following steps:
1. Uninstall the ACL software package using webOS Softwaremanager or Preware.
2. Be patient, this takes AGES and means heavy load for your device (at least that was in my case)
4. Now fire up a console or Internalz Pro
5. Make sure the folder /opt/omww does not exist. If it does, delete it.
6. Make sure the folder /media/omww does not exist. If it does, delete it.
Now your TP should be clear of ACL. If you want to be 100% sure, you can do some more tests. First run this command in a console: ps aux | grep acl
If nothing comes up, that is good. If something comes up, check if it looks like belonging to acl.
You can also run this: find /etc -name *acl* and see if that produces results (takes some time, be patient). It should not, if it does, report back and people can tell you if you should delete the files..
Basically that is what I did to make sure my TP is clear of ACL. After that I could install ACL 1.2 with Preware again and now it works fine (as fine as 1.x, did not notice any obvious changes). Also, if you follow some guides to install market apps, be sure to adjust them to the new paths, i.e. replace /opt/omww with /media/omww in all commands.