Feature images not showing

My featured images are no longer showing:

http://schweboo.com/beyond/beyond-library/

I have the same problem when I list the images in product category:

http://schweboo.com/beyond/beyond-library/product-category/travel/middle-east/iraq/

I welcome thoughts on how I can fix this problem!

Best regards

Chris

Below are details of my installation:

### WordPress Environment ###

Home URL: http://schweboo.com/beyond/beyond-library

Site URL: http://schweboo.com/beyond/beyond-library

WC Version: 2.5.1

Log Directory Writable: ✔ /var/www/vhosts/schweboo.com/httpdocs/beyond/beyond-library/wp-content/uploads/wc-logs/

WP Version: 4.4.1

WP Multisite: –

WP Memory Limit: 256 MB

WP Debug Mode: –

Language: en_US

### Server Environment ###

Server Info: Apache

PHP Version: 5.5.29

PHP Post Max Size: 8 MB

PHP Time Limit: 600

PHP Max Input Vars: 1000

SUHOSIN Installed: –

MySQL Version: 5.5.45

Max Upload Size: 2 MB

Default Timezone is UTC: ✔

fsockopen/cURL: ✔

SoapClient: ✕ Your server does not have the SoapClient class enabled – some gateway plugins which use SOAP may not work as expected.

DOMDocument: ✔

GZip: ✔

Multibyte String: ✔

Remote Post: ✔

Remote Get: ✔

### Database ###

WC Database Version: 2.5.1

:

woocommerce_sessions: ✔

woocommerce_api_keys: ✔

woocommerce_attribute_taxonomies: ✔

woocommerce_termmeta: ✔

woocommerce_downloadable_product_permissions: ✔

woocommerce_order_items: ✔

woocommerce_order_itemmeta: ✔

woocommerce_tax_rates: ✔

woocommerce_tax_rate_locations: ✔

### Active Plugins (18) ###

Akismet: by Automattic – 3.1.7

Contact Form Builder: by WebDorado – 1.0.37

Host PHP Info: by Arefly – 1.0.4

Increase Upload Max Filesize: by Smartest Themes – 1.1

Official StatCounter Plugin: by Aodhan Cullen – 2.0.1

Picturefill fix for WooCommerce: by Jeremy Moseley – 1.0.1

Regenerate Thumbnails: by Alex Mills (Viper007Bond) – 2.2.6

Revolution Slider: by ThemePunch – 4.6.5

Simple Share Buttons Plus: by Simple Share Buttons – 1.1.3

Symbiostock: by Symbiostock – 2.1.12

WooCommerce: by WooThemes – 2.5.1

WooThemes Helper: by WooThemes – 1.5.9

Wordfence Security: by Wordfence – 6.0.23

WordPress Importer: by wordpressdotorg – 0.6.1

Yoast SEO: by Team Yoast – 3.0.7

WP Config File Editor: by AHMeD SAiD – 1.5.2

WP Fastest Cache: by Emre Vona – 0.8.5.5

WP Multibyte Patch: by Seisuke Kuraishi – 2.5

### Settings ###

Force SSL: –

Currency: GBP (£)

Currency Position: left

Thousand Separator: ,

Decimal Separator: .

Number of Decimals: 2

### API ###

API Enabled: ✔

API Version: 3.1.0

### WC Pages ###

Shop Base: #5 – /shop/

Cart: #6 – /cart/

Checkout: #7 – /checkout/

My Account: #8 – /my-account/

### Taxonomies ###

Product Types: external (external)

grouped (grouped)

simple (simple)

variable (variable)

### Theme ###

Name: Symbiostock Express

Version: 2.0.1

Author URL: http://symbiostock.com/

Child Theme: ✕ – If you’re modifying WooCommerce on a parent theme you didn’t build personally

then we recommend using a child theme. See: How to create a child theme

WooCommerce Support: ✔

### Templates ###

Overrides: symbiostock-express/woocommerce/archive-product.php

symbiostock-express/woocommerce/cart/cart.php

symbiostock-express/woocommerce/content-product.php

symbiostock-express/woocommerce/content-product_cat.php

symbiostock-express/woocommerce/content-single-product.php

symbiostock-express/woocommerce/loop/add-to-cart.php

symbiostock-express/woocommerce/loop/loop-end.php

symbiostock-express/woocommerce/loop/loop-start.php

symbiostock-express/woocommerce/loop/price.php

symbiostock-express/woocommerce/loop/rating.php

symbiostock-express/woocommerce/loop/sale-flash.php

symbiostock-express/product-searchform.php

symbiostock-express/woocommerce/single-product/add-to-cart/external.php

symbiostock-express/woocommerce/single-product/add-to-cart/grouped.php

symbiostock-express/woocommerce/single-product/add-to-cart/simple.php

symbiostock-express/woocommerce/single-product/add-to-cart/variable.php

symbiostock-express/woocommerce/single-product/meta.php

symbiostock-express/woocommerce/single-product/price.php

symbiostock-express/woocommerce/single-product/product-image.php

symbiostock-express/woocommerce/single-product/product-thumbnails.php

symbiostock-express/woocommerce/single-product/related.php

symbiostock-express/woocommerce/single-product/review.php

symbiostock-express/woocommerce/single-product/sale-flash.php

symbiostock-express/woocommerce/single-product/share.php

symbiostock-express/woocommerce/single-product/short-description.php

symbiostock-express/woocommerce/single-product/tabs/tabs.php

symbiostock-express/woocommerce/single-product/title.php

symbiostock-express/woocommerce/single-product/up-sells.php

symbiostock-express/woocommerce/single-product.php

symbiostock-express/woocommerce/taxonomy-product_cat.php

symbiostock-express/woocommerce/taxonomy-product_tag.php