Paypal validation error

Just so you know this has literally only just started happening since the last update, we have been using Jigoshop since it very first came out.

### Begin System Info ###

Multi-site: No

SITE_URL: http://www.thevillagewitch.co.uk
HOME_URL: http://www.thevillagewitch.co.uk

Jigoshop Version: 1.12.1
WordPress Version: 4.0

Platform: Windows
Browser Name: Chrome
Browser Version: 37.0.2062.124
User Agent String: Mozilla/5.0 (Windows NT 6.3; WOW
64) AppleWebKit/537.36 (KHTML, l
ike Gecko) Chrome/37.0.2062.124
Safari/537.36

PHP Version: 5.3.28
MySQL Version: 5.5.37
Web Server Info: LiteSpeed

eAccelerator: Disabled
APC: Disabled
OpCache: Disabled

PHP Memory Limit: 128M
PHP Post Max Size: 100MB
PHP Upload Max File Size: 100MB
PHP Max Input Time: 60
PHP Max Input Vars: 1000
WordPress Memory Limit: 64MB

Short Open Tag: Enabled
Allow URL fopen: Enabled

WP_DEBUG: Disabled
WP Table Prefix: Length: 3 Status: Acceptable

Show On Front: page
Page On Front: 928
Page For Posts: 0

Session: Enabled
Session Name: PHPSESSID
Cookie Path: /
Save Path: /tmp
Use Cookies: On
Use Only Cookies: On

DISPLAY ERRORS: On (1)
FSOCKOPEN: Supported

ACTIVE PLUGINS:

Akismet: 3.0.2
Block Bad Queries (BBQ): 20140922
Broken Link Checker: 1.9.5
Contact Form 7: 3.9.3
Easy Social Share Buttons for WordPress: 1.3.9.8.2
Exclude Pages from Navigation: 1.92
FV Simpler SEO: 1.6.24
Google XML Sitemaps: 4.0.7.1
Jigoshop: 1.12.1
Mad Mimi Sign Up Forms: 1.1
No Page Comment: 1.0.7
Quick Notice Bar: 2.0.0
Rank Tracker: 1.7.1
SEO SearchTerms Tagging 2: 1.535
Sucuri Security – Auditing, Malware Scanner and Hardening: 1.7.2
Vice Versa: 2.2.3
WangGuard: 1.6-RC4
WordPress Importer: 0.6.1
WordPress Meta Robots: 2.1
WP Admin Bar Removal: 2014.0816.0392
WP Maintenance Mode: 2.0.3

CURRENT THEME:

:

### End System Info ###