OpenVMS - cannot read BACKUP savesets after file transfers such as FTP

Problem

Backup savesets cannot be read by OpenVMS. The BACKUP command fails with error like:

$ BACKUP /LIST DEMO.BCK /SAVE

...

%BACKUP-E-READERRS, excessive error rate reading SYS$SYSROOT:[SYSMGR]DEMO.BCK;1

-BACKUP-E-HDRCRC, software header CRC error

%BACKUP-I-OPERSPEC

%BACKUP-I-OPERASSIST, operator assistance has been requested

%%%%%%%%%%% OPCOM 18-DEC-2014 17:26:25.22 %%%%%%%%%%%

Request 2, from user SYSTEM on VMS071

%BACKUP-I-OPERSPEC, specify option (QUIT or CONTINUE)

Record format and record length attributes have to be reset using the following script:

Use copy/paste on your OpenVMS system or download the following file:

Attachment Table

Example:

$ @RESET_BACKUP_SAVESET_ATTRIBUTES DEMO.BCK