Phase One Unable to open database Error on OS X High Sierra

PhaseOne Error when opening project

A good friend of mine just got a new Macbook Pro about 2 months ago.  He was in contact with the PhaseOne Vendor and they asked him to do a file system scan with Disk Warrior.  Now Disk Warrior isn't that expensive but it is costly at $120.00 USD and in Canadian Funds it is quite a bit more.  We ran Techtool Pro 9.6 and Apple Disk Utility and both found no issues with the file system.

I thought it was worth giving Onyx from titanium software a try.  It does several things that a disk utility will not do like cleaning caches, such as the kernel and file caches.

After running a default maintenance with Onyx PhaseOne launch with no problem, and sessions that were closing were now remaining open.