I have been working for a long time on lightroom 5 (actually 5.7.1). I have now installed lightroom cc and wanted to import the catalog from the old lightroom 5. System tells me that this is not possible and I first need to upgrade the catalogue to lightroom 6 before I can import it into lightroom cc. any workaround for this? i don't see the point to purchase a lightroom 6 first just to get the catalogue into lightroom cc...
Lightroom 5 catalogs are not compatible with the new Lightroom CC. There is no way to make them compatible. If you don't want to purchase Lightroom 6 then your only alternative will be to simply upload the images and start the editing process again.
Nope, you could upgrade the catalog from LR5 to Classic using a trial version, then migrate from the temporary Classic catalog into CC, if you want to move to the cloud version.
Just double check CC has the features you need, because it may be Classic you need at this time.