Due to changes that were introduced with Mac OS X 10.5 (Leopard), versions of MBC4 before version 4.2 will not install under this version of the OS.

Version 4.2 of MBC4 and all later versions are fully compatible with OS X 10.5 (Leopard).

Users of earlier versions can upgrade to the current version for
USD 175.00 / GBP 95.00 / EUR 145.00

Please go to the store for more details.

If you have more than one copy of MBC4, please contact us for reduced pricing when buying multiple upgrades.