Did you also try installing it using the command line.
I think it works different than the software center so it will probably work.
Execute this command: sudo apt-get install lazarus

I ran that and it ran, it gave no errors and appears to have been successful.  But I still have the same problem.

dferg@dferg-evny:~$ sudo apt-get install lazarus
Reading package lists... Done
Building dependency tree      
Reading state information... Done
The following additional packages will be installed:
  lazarus-1.6 lazarus-ide lazarus-ide-1.6 lazarus-ide-gtk2-1.6
The following NEW packages will be installed:
  lazarus lazarus-1.6 lazarus-ide lazarus-ide-1.6 lazarus-ide-gtk2-1.6
0 upgraded, 5 newly installed, 0 to remove and 0 not upgraded.
Need to get 0 B/10.8 MB of archives.
After this operation, 56.6 MB of additional disk space will be used.
Do you want to continue? [Y/n] y
Selecting previously unselected package lazarus-ide-1.6.
(Reading database ... 191032 files and directories currently installed.)
Preparing to unpack .../lazarus-ide-1.6_1.6.2+dfsg-1+b1_amd64.deb ...
Unpacking lazarus-ide-1.6 (1.6.2+dfsg-1+b1) ...
Selecting previously unselected package lazarus-ide-gtk2-1.6.
Preparing to unpack .../lazarus-ide-gtk2-1.6_1.6.2+dfsg-1+b1_amd64.deb ...
Unpacking lazarus-ide-gtk2-1.6 (1.6.2+dfsg-1+b1) ...
Selecting previously unselected package lazarus-ide.
Preparing to unpack .../lazarus-ide_1.6.2+dfsg-1_all.deb ...
Unpacking lazarus-ide (1.6.2+dfsg-1) ...
Selecting previously unselected package lazarus-1.6.
Preparing to unpack .../lazarus-1.6_1.6.2+dfsg-1_all.deb ...
Unpacking lazarus-1.6 (1.6.2+dfsg-1) ...
Selecting previously unselected package lazarus.
Preparing to unpack .../lazarus_1.6.2+dfsg-1_all.deb ...
Unpacking lazarus (1.6.2+dfsg-1) ...
Processing triggers for lastore-daemon (0.9.43-4) ...
Processing triggers for mime-support (3.60) ...
Processing triggers for desktop-file-utils (0.23-1) ...
Processing triggers for bamfdaemon (0.5.3-2) ...
Rebuilding /usr/share/applications/bamf-2.index...
Setting up lazarus-ide-1.6 (1.6.2+dfsg-1+b1) ...
update-alternatives: using /usr/lib/lazarus/1.6.2/startlazarus to provide /usr/bin/lazarus-ide (lazarus-ide) in auto mode
Processing triggers for man-db (2.7.6.1-2) ...
Setting up lazarus-ide-gtk2-1.6 (1.6.2+dfsg-1+b1) ...
update-alternatives: using /usr/lib/lazarus/1.6.2/lazarus-gtk2 to provide /usr/lib/lazarus/1.6.2/lazarus (lazarus-1.6.2) in auto mode
Setting up lazarus-ide (1.6.2+dfsg-1) ...
Setting up lazarus-1.6 (1.6.2+dfsg-1) ...
Setting up lazarus (1.6.2+dfsg-1) ...
dferg@dferg-evny:~$

I really, really would like to get this resolved, please.

Thanks

https://forum.lazarus.freepascal.org/index.php?topic=31575.15

See if the link above can help.

I am sorry but that didn't work for me.  I just recently started playing with Pascal again.  The last time I played with writing software was using Pascal on my Commodore 64, yes I'm that old.  While I am not a developer I would really like to continue to work on this.   So, please can someone ask a dev to take a look.

Thanks

Must it be lazarus?
I think there are more IDEs for pascal.
https://yandex.com/search/?lr=213&msid=1488214005.89437.22897.6665&oprnd=9178005363&text=pascal%20ide
Look if you find something usable.

Code Typhon is here too: http://www.pilotlogic.com/sitejoom/index.php/codetyphon
It's lazarus on the steroids...