MCUXpresso 11.3.0 mexfile is not being re-created

[1234567890]

After exporting a project from 11.2.1 and importing in 11.3.0 I had some weird warnings:

Tooltip: "Currently, there are 1 error and 0 warning".

But Problems view ist empty.

So I deleted the mexfile as recommended here: https://community.nxp.com/t5/MCUXpresso-IDE/How-do-I-get-MCUXpresso-to-ignore-the-MEX-file/m-p/83540...

But then I get this error and have to restore the old mexfile.

[1234567890]

Update (edit post no longer possible?):

The workspace-log says just before the error-message:

!MESSAGE The project 'xxx' does not contain any SDK reference or the SDK cannot be found.
!STACK 0

This error also occurs when clicking (project in Project Explorer highlighted):

[ZhangJennie]

Hi

From the error message, the problem could be related with SDK.

what's the SDK version do you used on MCUXpresso IDE 11.3.0 and 11.2.1?

What's the part number?

Thanks,

Jun Zhang

[1234567890]

Hi,

sorry for incomplete information: On 11.3.0 I installed 2.9.0 and on 11.2.1 2.8.0 SDK LPC845BREAKOUT.

[ZhangJennie]

Now you use MCIXpresso IDE 11.3.0  + SDK 2.9.0. Both of your IDE and SDK are updated.

With this new SDK, I suggest you create a new  project and import your own code into it. 

When you decide to start a new project with a specific version of SDK, we suggest you continue with it. sometimes a new version of SDK may change files or structure or function name, it potentially brings you trouble. If for some reason you must change SDK version, create a new project under new version of SDK then import your code part by part into it. This can save engineers workload from long term view.

Have a nice day,

Jun Zhang