Version 2.3.5 is now available from here until it is in the add-ins section:

http://########################.co.uk/versions/b...ail_v2.3.5.zip

Bug fixes to the Standard Parcels Modules (no need to re-install just place the files on the server)
Optional Shipping Estimator now updated to 1.3.8 code and re-arranged in the optional folder to make installation easier.