We are sorry for the trouble. AS described you are getting the error P204 while installing the application.
Error P204 indicates there was a problem accessing a critical file or directory during the download and installation process. It commonly occurs when misconfigured security software is preventing access to a required file/directory. Please review the settings of any installed security software to verify it is not interfering with the process. If you are unsure how to adjust the software settings then temporarily suspend the usage of the software so that the download process can be completed successfully.
Also, please check for any missing/pending updates for your computer OS and try updating them and see if that makes any difference.
If it still doesn't work, please try to create a new test user profile with full admin rights in Windows or enable the root account in Mac and try installing the application there and check.