Hi,

The Visual C ++ runtime serves applications that were compiled to work with a library version.
And 64-bit machines need to install the 32-bit runtime to run applications compiled in 32-bit.
So, it will be a good idea to keep old versions, and even if you have a 64-bit cpu, First of all for Windows users, especially windows 8 users :

The Visual C ++ runtime serves applications that were compiled to work with a library version.
And 64-bit machines need to install the 32-bit runtime to run applications compiled in 32-bit.
So, it will be a good idea to keep old versions, and even if you have a 64-bit cpu, the C++ x86 (32-bit version) should be usefull

These versions must be installed manually:
C++ 2012 (x86 and x64) http://www.microsoft.com/en-us/download/details.aspx?id=30679
C++ 2010 (x86) http://www.microsoft.com/en-us/download/details.aspx?id=5555
C++ 2010 (x64) http://www.microsoft.com/en-us/download/details.aspx?id=14632

if you still encounter runtime error after that,

-Close your Opal wallet.
-Go to C:\Users\YourUsername\Appdata\Roaming\Opalcoin
-Save your wallet.dat & your opalcoin.conf files in another folder.
-Delete all the other folders & files located in the Opalcoin Folder except wallet.dat & opalcoin.conf
-Restart your wallet, let it sync, it should be good.


*if you can't see Appdata: click "Organize▼" (upper left) then click "Show Folders and Search Option" click view and Check "Show hidden files, folders, and drives", and then click OK
for Windows 8 From the Control Panel, type Folder Options in the search box: click "Folder Options", click "View" then Check "Show hidden files, folders, and drives, and then click OK