Where is the link to the SWFUpload module? I can't find it in the Extensions section, it provides no results when I search for it. I need it because I have DataObjectManager for my site which is SS2.7 and it says, "Error: DataObjectManager requires the SWFUpload module." whenever I proceed to the files section.
I'm guessing you mean you have Silverstripe 2.3.7. In that case you need the 2.3 branch of DataObjectManager and SWFUpload which you can get here:
And the Module information is here:
You need to ensure you have Not supported selected when searching the modules to find modules like these.