# Installing Swipl-8.2.1 in Mac catalina, with eclipse PDT plugin - path to prolog executable is invalid

**URL:** <https://swi-prolog.discourse.group/t/installing-swipl-8-2-1-in-mac-catalina-with-eclipse-pdt-plugin-path-to-prolog-executable-is-invalid/3117>\
**Category:** Installing\
**Created:** [October 30, 2020, 5:07pm UTC](https://swi-prolog.discourse.group/t/installing-swipl-8-2-1-in-mac-catalina-with-eclipse-pdt-plugin-path-to-prolog-executable-is-invalid/3117 "2020-10-30T17:07:21Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![kamcole](https://avatars.discourse-cdn.com/v4/letter/k/e274bd/32.png) [@kamcole](https://swi-prolog.discourse.group/u/kamcole)\
**Post date:** [October 30, 2020, 5:07pm UTC](https://swi-prolog.discourse.group/t/installing-swipl-8-2-1-in-mac-catalina-with-eclipse-pdt-plugin-path-to-prolog-executable-is-invalid/3117/1 "2020-10-30T17:07:21Z")

</div>

Yes, the documentation for Mac anything is sad. I will try to contribute - once I get it working myself.

Actually,don’t have any issues with the installation of Prolog. I just can’t get it working with Eclipse and the PDT.

Currently, getting the console error

```plaintext
! org.cs3.prolog.connector.process.PrologProcessException: org.cs3.prolog.connector.process.PrologProcessStartException: Failed to start the Prolog process.
! The path to the Prolog executable is invalid.

```

I got this after going into Eclipse-\>Preferences-\>PDT-\>Prolog Process, and entering the path that works on Mac:

```plaintext
/Applications/SWI-Prolog.app/Contents/MacOS/swipl

```

I say “that works on mac” because this is what I have added to my $PATH, and I am able to launch SWI-Prolog from my terminal.

But it’s clearly not working for Eclipse.

It’s good to note that I get the same error whether I have this Preferences entry, or not. So, there is some other “path to executable” within eclipse that is not valid.