Agreed, they have the responsibility. What they don't have is the ability to do anything about it. Without in house programmers they can only wait for the patches to be fixed whenever Fluid finishes them.
Really bad spot to be in, responsibility and no power. They should have held off publishing it till after it was finished, but it was already a year late.
I don't know how many beta testers they had, or whether all beta testing took place in house at Fluid. (Worst way to do it, never, ever be the one to test your own product.) But a lot of the bugs should have been caught before it went gold.
Not the only bad character generator out there either, Vampire got one where bugs the playtesters found were left in.
As for Fluid finishing the project, I don't think so. They have almost certainly gone on to their next project, placing E-Tools on a back burner.
The thing to do I'm afraid is start over from scratch. Maybe give a replacement to those unfortunate enough to buy E-Tools. But given the mollasses like speed of bug fixes I cannot recommend that they stick with Fluid. A company specializing in business databases might be a better choice, except for the mapping engine.
I notice that Mr. Valterra has been silent of late.
The Auld Grump, maybe I don't need to spread the blame thin, there seems to be enough for everybody.