I fixed the problem I had by first turning off the auto analyze feature in Preferences. It had nothing to do with the problem, but sped up the program considerably. Then I ran shake reduction on each clip in the project. I had only used shake reduction on one of two clips. Then I rendered the clip, again, and saved it. Then I was able to export the file. It is likely that just by rendering all the clips the problem was solved. ... View more

I created a new project, used shake reduction, and the program wouldn't export, supposedly because shake reduction is in progress. I tried removing the effect, restarting Adobe Premiere 18, adding the shake reduction, and export immediately afterward. I was still getting the shake reduction error. I then deleted the shake reduction effect altogether, restarted the program, and tried to export without using shake reduction, and I still get the shake reduction error. It seems this is a bug in the software, and there is something wrong with the way information is stored in a cache file. ... View more