Nothing happen with Apps Maker

I have downloaded the apps maker application and installated the required system. However, I followed the 4 steps required, it has nothing appeared after I click 'package' at the last step. It just pop up the folder that I have selected to package but no items there. Can you please advise further?

I had the same issue.

I removed all the blank spaces from Application Name and Application ID fields, and I got the program working.

Hope this may help.