Unable to open data file due to an error within the file.

[silencer39]

First off, apologies if this is the wrong thread to post this question under.

As the data file author for the Star Wars Xwing & Armada games looks to be on a hiatus, I was updating my copy for the Wave V release of Armada. I'm not a programmer but I've dabbled in his files enough to be able to update for many of the sets that have come out this past summer/fall. After making extensive updates to the Common.dat file I saved and closed it but when I attempted to load the game system or even to open the Common.dat file again I get the following error:

File: Common.dat line (508) - Option 'opSKRIStra' - Invalid characters used in string for attribute 'name'.

Is there a way I can get back into this file to correct the issue or am I stuck restoring a previous version and trying not to make the same mistake?