First of all many thanks to all involved in Gargoyle.
Having previously been running DD-WRT and Tomato on an E2000 I've taken the plunge and bought a WNDR3700 to be able to run Gargoyle.
I initially installed 1.5.4 but due to the 5GHz not working I downgraded to 1.5.3.
Having seen in the configuring guide that different themes were available I followed the instructions and then pulled up short when I read "plugin-gargoyle-dark-one-theme - 1.5.4-1". Can this be installed or do I need to get a 1.5.3 version of the theme?