When opening Solidworks2013 today, there was a prompt saying that the VBA engine vbe6ext.olb could not be loaded.
The solution is to copy the vbe6ext.olb file from the directory C:\\Program Files（x86）\\Common Files\\Microsoft Shared\\VBA\\VBA7.1 to C:\\Program Files\\Common Files\\Microsoft Shared\\VBA\\VBA7.1, then restart Solidworks2013.