r178 - thats about a year old ? I can't say I have noticed problems with the node webkit. Anyway....
How to open newer versions of capx files
unzip the capx and edit the caproj file in a text editor
find where is says (for example)
<saved-with-version>21100</saved-with-version>
and replace with an older number eg
<saved-with-version>17000</saved-with-version>
save and try
Search the forum for more information about opening newer versions in old versions.
(post above updated)