After updating to the latest version, the RAM icon next to the .rss file name is gone. It's just the generic windows icon now.
While installation, the registry keys for the icon were not set properly.
Update the registry manually.
Step 1: Open RegEdit (type RegEdit in the "Open" edit box, hit OK)
Step 2: Navigate to this location in the registry:
Click on UserChoice to the left and make note of the setting for ProgID on the right. It should say RAMManager.Document.
The same information should be available at:
In this case, make note of the default entry
Step 3: Now Navigate to HKEY_CLASSES_ROOT\RAMManager.Document and click the arrow to reveal the subkeys.
Click DefaultIcon (on the left)
The (Default) entry on the right should contain the path to RamContainer.exe in quotations followed by a comma and then the number -162. If you have anything other than that, double click (Default) to open the key and change the data.
Step 4: Close RegEdit.
Step 5: Restart the machine.
P.S. Note that the icons will not change in the File Explorer until you perform Step 5.