Nathan,
This happened to me last week. Ensure that you do not have Java SE Runtime Environment 8u51. It might have upgraded automatically. I had to uninstall all Java versions then I installed a fresh copy of 8u45. Works perfectly again.
So i tried cleaning and installing fresh again. Here were my steps and status.
Java Console and Logging are enabled.
1: Installed Java 1.8.45 32bit
2: Installed Ignition 7.7.4 32 bit
3: Ran Designer with no issues.
4: Restored Gateway from Backup
5: Runtime App runs fine. Console loads and logs.
6: Attemted to load the Designer: Does not load. Get the Java splash then disappears, Java Console Does not load. No logs or traces are logged via java. Able to see either jp2launcher.exe or javaws.exe popup in the taskmanager, then disappears when the java splash goes away.
I’m in the testing phase of migrating our gateway to a new server. So at the moment we are still up and running, but I’m hoping to complete our migration by the end of next week.
It sounds like you may have settings in your backup that don’t mesh with your new installation. You might want to check the Designer Web Launch settings in the Gateway Settings area. Make sure it supports the correct java versions, has ok memory settings, etc. Try restoring defaults to the web launch settings if yours are different.
If you aren’t seeing the console, the JVM likely isn’t even getting started so something is going on with the launch configuration.
I had the same behavior only just on the client, the designer worked fine. I could launch clients from other servers just not this one. Not sure the root cause but uninstalling 32 bit java on my laptop solved the issue for now.