I have the following problem when backing up an S7 300 PLC… 13:77 “(2000) Error while uploading the configuration to the programming device (PG). Do you want to continue?” Error 13:77 is in a table of errors that siemens publishes, which I attached. Has this error occurred to anyone? How can it be corrected? I am doing a backup of the plc to add a card to the rack, but my fear is that when downloading the new hardware configuration with the additional card to the plc, I also download the error 13:77 that was detected and this generates a malfunction of the machine Unfortunately, I don’t have the original manufacturer’s program. I will appreciate any information that can help me correct this problem. Thank you very much!