[AppInitio]

Sorry about this: Very unusual. If the app can't access the library, presumably the 3+3 thumbnails on Home screen and the Top-30 report in View menu are also blank? Please reboot the Mac and try; if even that doesn't help please email us via the app mentioning your macOS version, so we can troubleshoot step by step.

[flxfxp]

Seems like a pending OSX update was the case; prior to that I rebooted twice and it wasn't working, after updating OSX it worked :-)

[AppInitio]

Yay! If you find the app useful, please do rate it on the App Store - that's the only way indie developers can gain some visibility. Thanks.