Firefox not transferring to sagepay

[janimal]

Hi all,
I just had to change the VAT rate on my clients site and of course perform a test purchase to ensure everything is as it should be.

However I found that when attempting to purchase, firefox 3.6.13 doesn't forward to sagepay. It just stops at the "You will now be automatically transferred to the Sage Pay VSP secure server to process your credit card details with complete confidence. " page.

I ensured no-script was turned off. I have never experienced this issue on the site before and I have only changed the VAT tax rate since the last update so I am confused.

I tried a purchase using chrome & it worked fine.

Has anyone else experienced this issue?

thanks,

Jan

Update: I just tested on an older version of firefox (3.6.2) and it transferred to sagepay no problem...

[NormanRouxel]

Try using Firefox's Tools / Error Console to see if it reports any problems as you checkout.

[janimal]

Thanks Norm.

I disabled all my development plugins and it then worked.

I'll check out the error console if I can reproduce it once I re-enable all the plugins.