I uninstalled S32DS and reinstalled it this morning. It's strange that the reminder I encountered is different from your error.
Loaded configuration has been created by newer version of the tool. If saved, some information may be lost.png
Even though S32DS extensions and Updates offline install S32K1S32M24X Real Time Drivers AUTOSAR 4.4&R21-11 Version 2.0.0 and SW32K1-ISELEID-R21-11:0.9.0_ CD01-D2403/DS-updatesite.zip did not automatically install S32DS Update 4 or 10.
Even so, I can still open the. mex file without any errors.
S32DS Extensions and Updates offline install S32K1 RTD 2.0.0.png
S32DS Extensions and Updates install S32K1 RTD and development package.png
S32DS Extensions and Updates install confirm.png
Here is the Installation Details after finish installed S32K1S32M24X Real Time Drivers AUTOSAR 4.4&R21-11 Version 2.0.0:
Installation Details after offline install S32K1 RTD 2.0.0.png
Using the same method, install SW32K1-ISELEID-R21-11:0.9.0_ CD01-D2403/DS updatesite.zip.
Here is the Installation Details after finish installed SW32K1-ISELEID-R21-11:0.9.0_ CD01-D2403/DS updatesite.zip:
Installation Details after offline install S32K1 ISELED AUTOSAR R21-11 0.9.0 CD01.png
I am able to open .mex file.
Iseled_FlexIO_example_S32K144_DS S32CT.png