To better understand your problem, can you please provide the following information:
- OS, including version, and Service Pack if installed
- Browser, including version
- Screenshot of the error (see How to post a screenshot in the forum)
I see Error 1722 explains - 'There is a problem with this Windows Installer package. A program run as part of the setup did not finish as expected.'
Could you also answer a couple of more questions please:
1. What do you mean by a Safe Version key - Is it a password safe key?
2. You also quote - 'It works fine on the machines which still have the package' can you please elaborate this statement.
3. Also, Can you please provide me a detailed information about your distribution environment setup, and Steps you are performing which are leading to this issue.
I have a few theories but, I require the above information before moving to the next step.
Also, I have found a similar thread(Flash Install Error 1722) with the same issue, could you please go through this, if it resolves your problem.