Hi Clovis,
Please follow the below steps to resolve this error. I faced the same error while launching HANA Studio. This error occurs because your .snap file is not updated after a crash.
Navigate to C:\Users\Windows User\hdbstudio\.metadata\.plugins\org.eclipse.core.resources
If you see the .nsap file then delete it and restart your PC then re-lunch HANA Studio.
This should resolve the error.
Note: If you navigate to C:\Users\Windows User\hdbstudio\.metadata\.plugins\org.eclipse.core.resources and you don't see the .snap file, delete the entire org.eclipse.core.resource folder, then restart you PC then re-lunch HANA Studio
Let me know if this helps.
Regards,
BC