I have the same error
I have the same error this is the message from the debug I have removed all my details and made them into ** to protect myself.
PayPal Full Request :
millionsofdreams1_api1.yahoo.comSNYA78GUYB9QHZAAAFcWxV21C7fd0v3bYYYRCpSSRl31AUPVFlLrRCloo4lNXvyi5NwYY2Fq2.20Sale0.600.6WebAssist.eCartPHP.Pro.DPRound multi coloured acrylic beads0.328warren16 ******** roaddentonN/Am**7**GB********Visa4547********587**2011verifiedwarrenphillipswarr*****@googlemail.comGB
16 ******roaddentonN/AGBGBm3****0798557******
45479.67.51.143a45284ae5300305e977c9b8dc91a05c2Paypal Full Response :
AFcWxV21C7fd0v3bYYYRCpSSRl31AUPVFlLrRCloo4lNXvyi5NwYY2Fq2009-10-06T21:48:02ZFailure95aa24449b720Invalid ConfigurationThis transaction cannot be processed due to an invalid merchant configuration.10501Error2.200000000.60USPS Full Request :
USPS Full Response