Hello Paul, and thank you very much for your help! 

As I mentioned in my post, I am actually using Studio 2019 not 2015. I am not running Explorer but actually Microsoft Edge on Windows 10. 

I have searched online the closest to the area of this message that I have found is the following discussion, in which you participated, I don''t know if this is helpful to mention:

https://community.sdl.com/product-groups/translationproductivity/f/studio/20792/object-reference-not-set-to-an-instance-of-an-object---studio-2019

(Of course the error code is different in my case., I see that it is 0.)

Any further suggestions? Thanks!

Joaquin Font

Joaquin Font said:

As I mentioned in my post, I am actually using Studio 2019 not 2015.

apologies - my mistake.  I read the Studio15 error and told myself this was 2015 when the 15 clearly refers to 2019... doh!

The problem could be related to your IE browser even though you are using Edge.  If you press the window  key on your keyboard and then type IE. This should bring up the option to run Internet Explorer as this is almost certainly on you machine.

Once it's running click on the settings icon on the top right and select "About Internet Explorer".  Should open a window similar to this:

If you have an older version running press the Windows  button, type Settings then select Update & security > Windows Update, and then select Check for updates.

Joaquin Font

Joaquin Font said:

As I mentioned in my post, I am actually using Studio 2019 not 2015.

apologies - my mistake.  I read the Studio15 error and told myself this was 2015 when the 15 clearly refers to 2019... doh!

The problem could be related to your IE browser even though you are using Edge.  If you press the window  key on your keyboard and then type IE. This should bring up the option to run Internet Explorer as this is almost certainly on you machine.

Once it's running click on the settings icon on the top right and select "About Internet Explorer".  Should open a window similar to this:

If you have an older version running press the Windows  button, type Settings then select Update & security > Windows Update, and then select Check for updates.

Thank you so much Paul, this worked! 

Hello again Paul, I spoke to soon! I was able to get to the next window, which is the translation and translation memory settings dialog box, and there I was able to check the Advanced Settings, however when I click OK to proceed to the translation, instead of the Editor window I once again get the same message as before. So the problem is either not resolved at the prior level or is not resolved here. Any suggestions? Thanks!

Joaquin Font

ok - in this case I suggest you log a case with our technical team.  This can be achieved really quickly using this link:

gateway.sdl.com/liveagentlicensing

You have two options:

1. Submit a case using a webform
2. Use live chat to get a licence reset

You want to use the first option and make sure that you refer to this thread so the teams can see what you have tried already.

OK I will do this, thanks again for you help, Paul!