GMMPS 1.5.1 was released on December 19, 2018 with bug fixes and installation improvements. Mask designs are compatible with v1.4.5. Changes since v1.4.5 are:

• Change GMMPS to use curl instead of wget when checking for updates
  • It will try to use wget if curl is not found.
• Fix GMMPS bug with launching help pages on Mac (and improve help page use on Linux)
• Update GMMPS build to fix problems with typing in text boxes
• Remove python dependency in GMMPS
• Support skycat 3.1.4 
  • Skycat 3.1.4 and the required Tcl/Tk are now included.
  • Skycat has been modified slightly so that it will compile on macOS.
• Resolve number format problems for non-English locales

More information can be found here.