PictureMe and PictureMe Pro are NOT Catalina compatible. Apple makes the life of developers hard by their yearly unannounced new versions of Mac OS, with all kinds of changes under the hood that break existing software. We are working on a new version of PictureMe (Version 3.0) which will be Catalina Compatible, and hope to release that within a week. We advise against upgrading to Catalina immediately as new operating systems often create more issues than provide useful new features. Catalina is a good example; if you are already running Mojave, you should feel no rush to install Catalina, as you will likely not be impressed with the benefits.