hi there,
i want to help, but also i have problems to understand your report.
-a- second post first:
no idea what you talk about
- install ( unzip ) processing
- copy one of your sketch
anyhow miss the info how it play out.
first post:
ok, with processing we must consider 3 locations on your computer:
- -a- processing ( with java )
 you unzip the downloaded processing like ( for a win 10 )
 http://download.processing.org/processing-3.5.3-windows64.zip
 to any directory like
C:\Users\ < USER > \Documents\processing-3.5.3
when you start we talk about the
C:\Users\ < USER > \Documents\processing-3.5.3\processing.exe
( or any link to it )
- -b- at first start it makes 2 more directories
C:\Users\ < USER > \Documents\Processing\
what is for sketches, libraries and modes
called sketchbook
if you deleted that you lost all your projects.
- -c- and a directory i call system directory ( here for windows )
c:\Users\ < USER > \AppData\Roaming\Processing\
where the preference file and old error logs are.
in case if unzip newest downloaded processing for your system
and still not start, i recommend to delete that -c- system directory
possible there is something bad.
what you can loose max with deleting that is any adjustments made in
PDE / File / Preferences /
( like skechbook path and editor look… )
try to be more precise next time.
- OS name and version
- processing version ( and bit 32/64? )
- downloaded filename
- path information