March 3rd, 1999: Here is a minor patch to ivtools-0.7.4 that ensures import from a socket or Unix filter works in conjunction with the new asynchronous incremental download of rasters from URLs.
If you downloaded a copy of http://www.vectaport.com/pub/bin/ivtools-0.7.4-LINUX.tgz prior to March 3rd, you may want to re-acquire it to get a fix for this problem in your copy.