1: eval: ./displaylink-installer.sh: Permission denied

[Jim2220]

This is additional output using bash -x to obtain more info:

+ MS_Printf ' 100%% '
+ printf ' 100%% '
100% + test xy = xy
+ PATH=/usr/xpg4/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games
+ cd /tmp/selfgz1274024900
++ id -u
+ chown -R 1000 .
++ id -g
+ chgrp -R 1000 .
++ expr 12083 + 6017747
+ offset=6029830
+ test n = n
+ echo

+ cd /tmp/selfgz1274024900
+ res=0
+ test x./displaylink-installer.sh '!=' x
+ test xn = xy
+ eval ./displaylink-installer.sh install
++ ./displaylink-installer.sh install
./displaylink-driver-1.0.138.run: line 489: ./displaylink-installer.sh: Permission denied
+ res=126
+ test 126 -ne 0
+ test xn = xy
+ test n = n
+ cd /tmp
+ /bin/rm -rf /tmp/selfgz1274024900
+ eval true
++ true
+ exit 126

It appears as though the .run file is using a script to do some preliminary work before it unsuccessfully attempts to invoke displaylink-installer.sh. How can it be that the .run file has insufficient permissions to invoke something contained within itself?