Dreamweaver doesn't open

[Rinoldi-Blubit]

When I want to open Dreamweaver it loads and then a window appears saying "The last time you opened Dreamweaver CC, it closed unexpectedly when reopening the windows. Do you want to try to reopen the windows again?"
Two buttons appear: "do not open" and "Reopen", however if I click on "Reopen" the program will close.
You can help me?

[BenPleysier]

Try https://support.microsoft.com/en-au/help/302542/how-to-diagnose-system-problems-with-event-viewer-in....

If you still cannot figure it out, paste the contents of the relevant event log here.

[Rinoldi-Blubit]

I have a Mac.

[Jon Fritz]

It's possible something in one of the pages you are trying to reopen is the cause of your crashing.

If you can open the program, without reopening the pages, and then manually reopen the pages, run them against the validator at http://validator.w3.org/nu and clean up any structural errors.

If DW crashes when manually trying to reopen those pages as well, you may need to open them with SimpleText or another text editor, then run the validation tool above and modify the file before bringing it back to DW.

[Rinoldi-Blubit]

Actually I would just like to open the program, not a specific file. I
click on the Dreamweaver icon, it looks like it's going to open, but it
doesn't actually open.

--
*valeria rinoldi *| web developer & cms specialist
[moderator: removed personal info]

[BenPleysier]

We are now learning that you are on a Mac; may we also know the operating system? May we assume that you are using the latest version of Dreamweaver? May we assume that you have been able to open Dreamweaver previously and that something has changed in the meantime?

[Nancy OShea · Accepted solution]

Dreamweaver 20.0 & Dreamweaver 19.2.1 work with macOS 10.15 (Catalina) but have these  known compatibility issues. 

Earlier versions of DW won't work on Catalina.

[Rinoldi-Blubit]

I think it was an update problem. Now it has opened. Thanks for your help.

[PERSONAL INFO REMOVED!!!]