Thanks for the advice. I didn’t know you could run JAVA files like that (not compiled) using ImageJ. Unfortunately, still not a solution. Here is the current status. I have created the subfolder ESRF in plugins. There, I have placed the 6 files from the GitHub repository as well as the 4 files provided on the page. This results in 6 options appearing in the menu (even after renaming EdfMovie.txt to EdfMovie.java). The 6 options are the following (in order): EdfRead, HSTVolReader, EDF Reader, EDF StackReader, ESRF Reader, ESRF Writer. With the exception of HSTVolReader, they all exit with a bunch of errors when I try to run them. For HSTVolReader, it opens a file selection window. After selecting a VOL file, it displays “Barf” in the status bar and exits. How do I know the plugins are done? I wait a bit and assume they exited if nothing happens.