Could not open the editor: Assertion failed:

Question

when i open .mxml flex file in eclipse it gives error

Could not open the editor: Assertion failed:

Does any one know about it

Answer 1

First of all you can give which operating System and version, IDE version, Flex plugin version, detail of error message. You can try ;

1. Check eclipse and flex plugin version compatibility if you use flex plugin. (If you use Linux operating system flex plugin compatible with eclipse 3.3 ide if not You can try to install flex plugin on eclipse 3.3 if you use 3.4 or 3.5 and so on)
2. You can download full package of flex ide instead of flex plugin on eclipse

Answer 2

i got the same problem.... eclipse galileo 3.5.1

Answer 3

http://franksveranda.blogspot.com/2009/11/installing-flex-builder-3-with-flex-4.html

Answer 4

Try changing your current workspace to another one, it helped in my case. If you have disabled asking for workspace at startup you can change it here: Window > Preferences > General > Startup and Shutdown

Answer 5

I just got the same error, after moving my project to a new computer. Turns out the build paths needed to be changed in the new computer. After updating those it seemed to fix the problem.

Answer 6

Switching workspace works.

Answer 7

switch workspace doesn't always work ! eclipse helios

what kind of config file should we just move or edit or delete or rewrite or modify to make computer science work !!!!

congif files 'till the end of time

computers never plug and play ;-(

Answer 8

I think its better to stop searching when you are in Flash and Linux. Here in this link its very much transparent. I tried all the fix provided out there, nothing did really worked what new comers are looking for.

Details: http://labs.adobe.com/technologies/flex/flexbuilder_linux/releasenotes.html#sysreq

Note: GUI will never work, which we are thinking and Autocomplete etc will also not work. So Flash and Linux is actually useless and time lose. The best thing is keep reporting Adobe for this. Because they are counting our Linux Vote.

Answer 9

This worked for me: http://doit.juii.net/uncategorized/1287

Answer 10

Hi All,

I have Eclipse 3.4.2, and got the Flex Builder 3 plugin 3.0.1, and I'm on Windows 7 64bit. I have the same error message: "Could not open the editor: Assertion failed: etc..."

I tried switching workspaces and it didn't work.

This setup used to work for me, but I had to reimage my laptop and now I get this error. Does anybody know what to do?

Thanks!