Hello,
Thanks for reporting this. I'll investigate. In the mean time, please provide the FlashInstall.log file from an impacted system. The file is located at C:\Windows\System32\Macromed\Flash\. If it's a 64-bit OS, an additional log file will be saved at C:\Windows\SysWow64\Macromed\Flash. Please provide both files, if it's a 64-bit OS.
The files will probably be fairly large, as such, please post the files using the instructions here: How to share a document.
Thank you.
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Maria