I made upgrade project from V6.22 to V7.00. Project is upgraded normally without errors.
In Runtime when I pushing buttons that switch screens faster (clicking on buttons every seconds) after few switching the screen is freeze and not possible any action. If I pushing buttons with interval of 5 seconds everything works normally. After freezing I must terminate Runtime in Task Manager.

In LOG file I found error that is maybe related with this: 100ms Timer has not cycled for 288960ms 0003 .\ZENONRT.CPP 0007 CZenonrtApp::MonitoringThread 0004 396

In Zenon 6.22 Runtime there is no problem that kind.

If anybody have solution please write.

Albert Nemet