3ds Max 2015 is well into it's product cycle. Due to the heartbleed vulnerability (a security bug in the open-source OpenSSL cryptography library) we have already released the first service pack. You can find the SP1 here for Autodesk 3ds Max 2015 Service Pack 1 and Security Fix and here for Autodesk 3ds Max Design 2015 Service Pack 1 and Security Fix.
Basically at the same time the debug symbols became available. Our engineering team has posted both versions - FCS and SP1.
As usual we encourage you to update to the latest service pack, so please consider doing so and be assured the symbols are already there!
See a previous post here, for details on debugging in 3ds Max: 3ds Max Public Debug Symbols and Plugin testing.