[image] I ran into this issue while trying to setup vision client launcher for a client. Looking at previous posts led me to believe I could resolve the issue by deleting the runtimes folder within "C:\Users\username\.ignition\cache\resources\runtimes" but that runtimes folder already doesn’t exist …

You can try removing the entire .ignition/ directory, rather than just the runtime cache. The cache will automatically be repopulated the next time you launch an application using one of the launchers. [image] chukwuemeka.agu: Is it missing because I only had the customer install Vision Client…

I see, I will implement this and update y’all with the result.

I tried and I still came up with the same error message. Has anyone run into a similar issue.

[image] Vision Client Project not opening after "Verifying Signature of Vision Client" Ignition Error: Could not find or load main class com.inductiveautomation.ignition.client.launch.BootstrapSwing Caused by: java.lang.ClassNotFoundException: com.inductiveaut…

Error Opening Vision Client Launcher

Ignition

paul-griffith April 9, 2026, 3:22pm 5

Yes, without conclusive results. But the analysis of the issue is the same as what I posted in the other thread.