topic Re: Error while adding New Resource in Thingworx Extension in ThingWorx Developers

Error while adding New Resource in Thingworx Extension

bmdeshmukh18 — Fri, 02 Jul 2021 18:03:01 GMT

Hi All,

I am trying to add a new Resource when creating a Extension in Eclipse.

But I am getting an error as " Please choose a valid Superclass - Class is not instance of: com.thingworx.resources.Resource". Attached the screenshot with the post.

Any idea, why this error is thrown.

NOTE: I have included the SDK zip while creating the project itself.

In addition to above, I also tried after adding few external JAR files to the project library.

Has anyone faced this error.

Thanks in Advance.

Bhushan

Re: Error while adding New Resource in Thingworx Extension

mnarang — Mon, 05 Jul 2021 07:03:07 GMT

Seems like either eclipse is not able to recognize the superclass or it is not available. Can you click on the browse button beside superclass and do you see this class coming from thingworx-ext-sdk-version.jar, something like this.

Re: Error while adding New Resource in Thingworx Extension

bmdeshmukh18 — Mon, 05 Jul 2021 09:58:35 GMT

Yes I see the class coming in pop up when I click Browse, same as you have posted.

Also where can I download older version of Thingworx Extension SDK /Eclipse Plugin.

Re: Error while adding New Resource in Thingworx Extension

mnarang — Tue, 06 Jul 2021 09:51:53 GMT

May I know your version of the extension SDK? On support.ptc.com it is available till 8.5. you can check it here:

Re: Error while adding New Resource in Thingworx Extension

bmdeshmukh18 — Wed, 07 Jul 2021 11:47:34 GMT

I am using Extension-SDK-9-1-0.

Re: Error while adding New Resource in Thingworx Extension

slangley — Thu, 15 Jul 2021 19:31:46 GMT

Hi @bmdeshmukh18

Did you try it with just the SDK--without the external libraries? There could be a compatibility issue.

Which version of ThingWorx are you developing your extension for?

Regards.

--Sharon

Re: Error while adding New Resource in Thingworx Extension

bmdeshmukh18 — Tue, 20 Jul 2021 12:19:54 GMT

Yes. I too think it might be due to some compatibility issue.

When I used lower version SDK, I did not see this error.

With / without the external libraries, it was working okay.

Regards,

Bhushan