exceptions.IOError:[Errno 32] Broken pipe about flex-compiler-shell-daemon HOT 5 CLOSED

Can you attach the log file here please?

I also had this issue, and I resolved it by defining the FLEX_HOME environment
variable.  In bash, here is one way to do that:

export FLEX_HOME="path_to_flex"

I put it into my .profile so the variable will always be defined.

As for a fix, it would probably be good to have a warning if the FLEX_HOME 
variable
is empty.

On another system, my little fix didn't work right away, and .profile was not 
sourced
for some reason, so it may be better to put the variable definition into 
/etc/environment

I discovered that on this second system, the path to FLEX_HOME had a symlink in
there, and that caused the fault as above.  When I changed the path to the 
direct
path without the symlink, everything worked fine.

I'll attach logs for when it is working and when it is not.  I just start fcshd
without a command, so it defaults to the help command.  I have also tested it 
with
compilation commands, so I know it works.

Fixed in r6 by checking that FLEX_HOME is set.