Several different scenarios might be leading to your difficulty with installing Adobe Flash. You might already have a version of Adobe Flash on the computer. You might not have enough memory to complete the installation. Your operating system might be incompatible with the installation. A few tips are presented below to help you troubleshoot for a solution. First, read through the entire list and then follow each strategy until you come up with a solution that works.
Uninstall Old Versions of Adobe Flash
Depending on how long you have had the computer, it is possible that you might already have an old version of Adobe Flash on your computer. Open your browser and look through your options to find out whether you already have a version of Adobe Flash. If you do see it listed, use the instructions (Uninstall Adobe) posted on Adobe’s website to uninstall it.
Reinstall a New Version of Adobe Flash
Once you have any old versions of Adobe Flash or incomplete installations of Adobe Flash, it is time to reinstall it using the directions on the Adobe website at Adobe Flash Player.
Check the System Requirements for Installing Adobe Flash
Before you do so, it is vital that you check the link listed on that web page for “System Requirements.” If your computer does not have the required specifications, then your attempted download of Adobe Flash will not work properly.
Instructions for Windows Vista
Users who have Windows Vista and have experienced problems with their installation or lack of installation for Adobe Flash should follow the directions on the Adobe website for uninstalling and reinstalling the application. It is possible that the installation began without completing.
If completing those steps does not work, then the following set of directions can be used:
1) Open the “Search” function on the computer.
2) Go to “C:\Windows\System32\Macromed\Flash\
3) Right click on the file “FlashUtil9b.exe or FlashUtil9e.exe
4) Restart the computer.

Opening DSC files
The Problem
Adobe Premiere and Timeline Rendering