I get "an error occurred while moving data-623" during Installation.
Delete all files in the /Windows/Temp directory, close down any virus protection utilities that may be running, and re-install the program.
I get "The decompression of %s failed. There may not be enough disk space available in the TEMP directory" error.
Windows can limit the size of the TEMP directory and it may be full even though you have free disk space available on your hard disk. Delete some files from the windows TEMP directory and try again.