Still having Paypal integration problems

[csyrimi]

V7
I've changed all the settings I believe I need to change after reading many of the existing posts but my integration is not yet 100% operational.

Latest problem is:

The customer order and pays using Paypal. When Paypal tries to return him to the site, the following error is given (by my site):

Error: Bad input string "SEQUENCE=3&ACTION=Finish&ORDERNUMBER=T580EQ10000405&REFPAGE=http%3a%2f%2fwww%2erugsandstuff%2eco%2euk%2facatalog%2fRug_Anti_Slip_Underlay%2ehtml&&tx=78T92324F9217702B&st=Completed&amt=4.65&cc=GBP&cm=&sig=r1PMcwzpF0uGj1DHR54id%2b5jw7QtQUPAEut9k6P6bRT4eLXK2Om5Q6Ue7%2fcW2%2b%2fBY%2bpH8UQBgtOcsquyPqWY301BqIukOg%2fX7oGJzTiDiA2%2bqL%2bizr2tb%2bwyKgoqDsYbvr3vzCCV0mP4wSmd9bp7FDgnvrBfAiMrSyrB0YubOIA%3d". Argument count 20.

These are my Paypal settings:

Auto Return for Website Payments
Auto Return: On
Return URL: http://www.rugsandstuff.co.uk/acatalog/index.html

Payment Data Transfer (optional)
Payment Data Transfer: On

Encrypted Website Payments
Block Non-encrypted Website Payment: Off

PayPal Account Optional
PayPal Account Optional: On

Contact Telephone Number
Contact Telephone: Off

Then:
Profile/Instant Payment Notification Preferences

Instant Payment Notification Preferences
Instant Payment Notification (IPN): On
URL = http://www.rugsandstuff.co.uk/cgi-bin/os000001.pl?


Can anyone point me in the right direction please?
Thanks.

[Kiran]

Hi

I'm going to run this past development. As soon as I hear something from them I'll get back to you.

Regards

[Kiran]

Hi

Before I pass this to development can you try something though, please set both PDT(Payment Data Transfer) and Auto return to off and see what happens . It's just been brought to my attention that this has worked for someone else.

Regards