Legacy deserialization threw the following errors:

After porting my project to Ignition, some screens are getting this error.

ClassNotFoundException: com.inductiveautomation.factorypmi.application.FPMIWindow

Yes we just discovered this this morning. You can get around this by making sure that you do the following before you upgrade to Ignition:

  1. Make sure you’re running the latest version of FactoryPMI
  2. Go into the Designer in FactoryPMI, and use the “Re-serialize All” option under the Tools menu.
  3. Save your project(s)
  4. Now make your Gateway backup, and import it into Ignition.