It tried to search the forum for anyone having a similar issue, but didn’t see it so I will put it up.
Over the weekend I installed Ignition 7.4.3 on a brand new desktop computer. Java 7.4 was installed as the default version from their website. When everything was installed, I tried to use the launch buttons from the home page to open the project, but this resulted in the HTTP 404 ‘requested resource could not be found’ page. The link embedded in the request seemed correct, and when I typed the link in directly (127.0.0.1:8088/main/…jnlp), then the project opened and worked fine.
Has anyone else seen this?