Hello Romina Paredes , 

The error seems to suggest that you are not on the latest version.

Please update your Studio version to the latest release-

Then close Studio and restart.

You may need to recreate the project.

Did this fix the issue?

No. I have the latest version.

And my SDL Language Cloud account is active

Hello Romina Paredes Can you provide screens shots please of the actual errors as they appear and the full stack trace  The following wiki tells you what you need to do -https://community.sdl.com/product-groups/translationproductivity/w/customer-experience/4159/how-to-get-help-quickly-in-the-sdl-community-technical-forums )

Then please go to the SDL Plug In management and remove any plugins that are installed

Then restart your machine.

Hi,

Apparently, the problem was one of the plugins I installed. I think it was the subtitling one since I have windows 7.

I can now work normally. 

Thanks.

Hi Steven,

I have just reinstalled Studio 2017 and when trying to confirm segments the same error above pops up. I am trying to copy-paste a screenshot of it, but don't manage to. It's this one anyway:

Can't load the type sdl.core.settings.abstractsettingsgroupbase" from "sdl.core.settings, version=1.8.0.0, culture=neutral, publickeytoken=c28cdb26c445c888

I have checked for updates as you suggested in reply to Romina. When trying to install them, another error appears, reading:

Could not open key: UNKNOWN\Components\156674BA88667B65BAC2741892EADCE2\EB0BFC7DB30BA5F448B6273CAC3D55FB. Verify that you have sufficient access to that key or contact your support personnel

When clicking on OK, a third error window shows:

Setup did not complete. The error is: Package "SDL WorldServer Components" could not be installed. Fatal error during installation. Error number: 1603

Any suggestions about how to solve this issue?

Thank you in advance for your help.

Concetta Sorace

Please post into a new thread and not on the back of this one.  Then it's easy for us to engage support to assist you with this problem.