Note that due to ABI changes between gcc-3.3 and gcc-4.0, you have to choose the right SDK depending on what compiler version you are using. As a rule of thumb, this means: - Mac OS 10.4 "Tiger" use [Sc21|Coin]-*-gcc4.dmg - Mac OS 10.3 "Panther" use [Sc21|Coin]-*-gcc3.dmg For more information, please read the relevant FAQ entries on the Coin/Mac website. Binary SDK patchlevel updates ------------------------------ The most current version of the Coin binary SDK for gcc3 is Coin-2.4.4_1-gcc3.dmg. The "_1" signifies that this is the first patchlevel update of the binaries based on the 2.4.4 source, where a problem with wrong permissions in the installed framework were fixed. The most current version of the Coin binary SDK for gcc4 is Coin-2.4.4_2-gcc4.dmg. In addition to the bugfix from the _1 patchlevel update, a symbolic link to the SoQt framework was added to support the upcoming SoQt binary SDK. If you have any questions or comments, please do not hesitate to contact us at coin-support@sim.no. Enjoy!