Still cannot make this work on my 1S10F Stratix board, I'm getting the following error having copied the relevant files from the NIOS2 kit into a single location to keep path lengths sane:

[SOPC Builder]$ elf2flash --input=zImage_std_1s10 --output=uClinux.srec --after=standard.sof --boot=boot_loader_epcs.srec --epcs --verbose
May 23, 2006 1:34:09 PM - (INFO) elf2flash: args = --input=zImage_std_1s10 --output=uClinux.srec --after=standard.sof --boot=boot_loader_epcs.srec --epcs --verbose
May 23, 2006 1:34:09 PM - (FINE) elf2flash: Starting
May 23, 2006 1:34:09 PM - (FINER) elf2flash: Program Record: 10786 bytes destined for 0x1800000
May 23, 2006 1:34:09 PM - (FINER) elf2flash: Program Record: 634081 bytes destined for 0x1802a24
May 23, 2006 1:34:09 PM - (FINER) elf2flash: Start Record: 1800000
May 23, 2006 1:34:09 PM - (SEVERE) elf2flash: Data error: Malformed memory record found.
May 23, 2006 1:34:09 PM - (SEVERE) elf2flash: Error retrieving data from zImage_std_1s10
May 23, 2006 1:34:09 PM - (FINE) elf2flash: Done