Remove self-healing on project file opened
Open .msi in Orca
Component table
Remove key path of component with ID {31DB780A-8AA4-1A96-F39E-1BD7CFCC2418}*
*I don't know if this id will stay the same, so here's how to find it:
Just install Coati as is
Open windows Event Viewer
Open .coatiproject via file association (wont work properly, that's ok)
Look for Application log
Look for a Warning entry involving MsiInstaller at time of step 3
Retrieve component id from message of that entry