GarageSale 5.5 is more than out-dated and no longer supported. (Remember that GarageSale 6 has been released in 2010(!))
It’s highly recommended that you upgrade to GarageSale 6 or better to the upcoming GarageSale 7! These versions support the latest eBay category data.
GarageSale 7 requires Mac OS X 10.10 or 10.11. During the beta phase the upgrade license is available for only 16.99.