Some additional 'paranoia checks' added into the 4.75-4.77 applications identified an important bug in the central LALDemod() routine of the analysis code. (PoorBoy: your lost workunits were not in vain!). The maximum velocity of our detector (as the earth orbits the sun and rotates on its axis) is about 1% larger than the code allowed for, so for certain data sets and sky directions, a frequency array was one bin smaller than required. This has been fixed, and new applications (4.78, 4.79, 4.80) are now being distributed.