Major headache that people are having with OP is when installing OP on shared hostings. While OP site clearly states that current OP version is not recommended for shared hostings, people still keep trying to install it on shared hosting so we will have to try do more in this regard, in the future.
One thing that we need help with is: if you can, please, tell us what are the different providers you tried to install OP on and had problems with. This will help us in testing, a lot. This is not to criticize any provider, we are just trying to detect problem areas so we can try optimize for those.