local curl URL's failing in 2 browsers

[RobertShiplett]

Folks,
With either the Curl plugin up-grade or browser upgrades or some combination, 2 browsers have stopped behaving as they have in past years.
Firefox refuses to load local plain .curl URL's unless wrapped in an HTML page within and OBJECT : it instead asks how to open the file, but I have no work-around as for Chrome which will force Surge to always run.
Opera refuses local Curl files whether wrapped or not.
So far I am having these problems in 32-bit browsers running on an older test XP SP-3 machine.
IE8 and the latest Pale Moon 32-bit continue problem-free with the same local Curl web pages - of which I have many for daily use.
Am I alone in reporting these difficulties at this time ?
I hope to hear from someone.
Thanks.

UPDATE : hitting some similar issues in three browsers on WIN 7 64-bit SP1 Example: Safari requiring LOCAL .curl files to run as embedded in HTML. Several Firefox issues but none yet in the current build of Pale Moon browser. IE 64-bit and 32-but fine again. Chrome remains fine with local .curl files. Will start Linux test later today after finish trying to find WIN 7 work-arounds.