Please check the CPU load of the process "zenrt32.exe". If this is very high (>49%) it is possible that an endless loop is configured in the project.The runtime starts with a gray screen and nothing is happening. What could be wrong?
E.g. if for a picture at the start-function, a function is executed to call just this picture.
Or a "Script A" contains a function to call "Script B" which again contains a function to call "Script A"
Also in VBA an endless loop can be "easily" created.
E.g. a "Do Loop": Do while not myVar = -1 ... Loop although myVar 1 points to a boolean variable which can only be "0" or "1".