Suddenly getting sync errors related to file names with special characters

• What is the error message that you’re seeing? 
• What does the Dropbox icon that’s next to your computer’s clock show when you hover over it?

I'm having the same problem suddenly today. I started trying to fix them but suddenly loads more are appearing. I'm using a Mac and have been using it without errors for years.

Julia

Error message is as follows:

"Couldn't sync 1488 files. 
View sync issues on Dropbox settings menu."

There are 2 options beneath the error message, "view" and "dismiss". If I press view, I get a list of the files that fail to sync and message suggesting I remove special characters. (the characters that seem to be an issue are ">" and "?" and "_").

The dropbox icon in the system tray (next to the clock) shows a "1" in red.

I'm on Beta build, using v71.3.102. Have unchecked the option for early release on Dropbox website just now.

Should I downgrade to stable release?

I'm on the same - v71.3.102. I tried installing 70.4.93, although it still says I'm on v71.3.102 after the update. However, it does seem to be working fine now.

I've downgraded to stable version.

1. I no longer get the red icon "1" on the dropbox icon in the system tray next to the clock
2. BUT, it still doesn't seem to sync the files with the special characters.

Question : are special characters in filenames not allowed now? The web version seems to suggest this - although the file names with special characters actually are visible on the webpage (so I assume it had been upload successfully in the past). Just want to confirm if I need to rename all these and avoid them in the future.