Do you want to retrieve data after invalid catalog record type error ? The Mac system drive manages all the stored files through its HFS+ file system. The operating system files are also stored in the same drive. Each of the file has its own catalog record in which the related informations are present. But if these records get corrupted then you may face the error at the system startup, while opening any application or file. The file that is affected by this error will become inaccessible which is a certain case of data loss. You must be now wanting to fix that error and retrieve data after invalid catalog record type error. The fixing can be done with the help of the disk utility program that can also be accessed through boot menu. You may even have to format the drive then the time machine can help you to recover the data. If not then yo can use the Mac data recovery software which will certainly retrieve data after invalid catalog record type error. The software is semi-automated and will as per your command. So you should download the software and keep using it whenever data loss occurs from Mac.