"Please contact Dropbox support with the following info for help:"???... Where is the info...?
PS: Thread like this can be proposal for Dropbox development - querying for help be more automated implementation - just a button click and forward to prefilled form. Many users get confused when error info content have to be moved to the thread (like here). Good examples (to get idea from) are "drkonqi", "apport"... and others (convenient and fully automated issues report).
i reached out to them on twitter and they gave me possible solution instructions that are way beyond my expertise to execute. i've been using dropbox for at least 10 years but i just migrated the data i had to my icloud. it's different but working just fine. i might gave them another try in a few months when i imagine updates will naturally work out whatever glitch i am experiencing. in the meantime every other ad that i see is for dropbox....
I'm sorry to jump in and I understand that you might not want to work on this issue any more.
That being said, note that in order for us to further investigate, we'd need to get and analyze the full error log that corresponds to the error message pop-up you're getting.
To get the full text of the error click on the blue link within the error's pop-up. This will open a file with the full text of the error. Then, copy and paste the whole text in your next response here so we can have a look.
i did send the full log and got the recommendation to do an advanced reinstall. that is too complicated solution for me and other average/ below average users. i genuinely don't understand what some of the step refer to / mean. to me that is something that is being walked over step by step over the phone.