I will attempt to translate:
They are trying to install ImageFX from CD apparently on Amiga OS 4 since they downloaded the installed from os4depot. They get a bunch of errors 'Ifxinstall read/write error 157 "LHA"' but it shows files installed, there are some lines added to the user-startup by the imagefx installer. When they open the ImageFX drawer, there is no icon to open the program just some drawers and other icons inside it.
I assume one of the errors might be extracting the icon file. Who knows what other files don't come out. Is it possible the CD is scratched/defective? try to copy all the files from the CD to a folder on your hard drive. If you get read/write errors then, I would suspect the CD.