@achuni: To save a bit of back-n-forth-ing, I took a look at the pay logs and see this:
2012-08-07 19:42:26,642 INFO NEW payment created with id '36682a0f9f5d9e03da0a651bf832d4fb' for user with openid '' as requested by consumer 'SCA'. 2012-08-07 19:42:26,870 WARNING Payment '36682a0f9f5d9e03da0a651bf832d4fb' has no openid associated. which results in a 404 on pay, but it looks like the openid could be being sent as '' from SCA. I need someone with access to our production data to confirm - but I'm guessing the value of subscription.open_id is not what we expect for Alexander's subscriptions above (ie. it would be returned as '' if there are no associated useropenid's for his user). ** Project changed: canonical-payment-service => software-center-agent -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to software-center in Ubuntu. https://bugs.launchpad.net/bugs/1022074 Title: Blank page when attempting to purchase software Status in Online service used by software center: New Status in “software-center” package in Ubuntu: Confirmed Bug description: When trying to purchase for-sale software via Software Center, I only see a blank page after providing my Ubuntu Single Sign On credentials. This affects all for-sale items in the catalogue, on two different computers, one running Ubuntu 12.04 i386 and the other running Ubuntu 12.04 amd64. Non-commercial software is not affected. This bug is almost certainly related to #879455, which seems to have evolved into this (at least for me). I do not know what caused that to happen, nor exactly when it happened. ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: software-center 5.2.3 Uname: Linux 3.4.0-030400-generic x86_64 ApportVersion: 2.0.1-0ubuntu8 Architecture: amd64 Date: Sat Jul 7 16:15:25 2012 InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425) PackageArchitecture: all ProcEnviron: PATH=(custom, no user) LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: software-center UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/software-center-agent/+bug/1022074/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp

