Conflict with Product Open Pricing plugin

I’ve been experimenting with a plugin that allows products with variable pricing (set by the customer) and unsurprisingly this conflicts with the currency switcher:

Warning: A non-numeric value encountered in /var/www/foxbox/wp-content/plugins/currency-switcher-woocommerce/includes/functions/alg-switcher-functions.php on line 653

Call Stack
#	Time	Memory	Function	Location
1	0.0000	369032	{main}( )	.../index.php:0
2	0.0001	369320	require( '/var/www/foxbox/wp-blog-header.php' )	.../index.php:17
3	0.7698	25095408	require_once( '/var/www/foxbox/wp-includes/template-loader.php' )	.../wp-blog-header.php:19
4	0.7723	25201384	include( '/var/www/foxbox/wp-content/plugins/woocommerce/templates/single-product.php' )	.../template-loader.php:98
5	1.0544	25919760	wc_get_template_part( )	.../single-product.php:37
6	1.0545	25919984	load_template( )	.../wc-core-functions.php:197
7	1.0545	25957152	require( '/var/www/foxbox/wp-content/plugins/woocommerce/templates/content-single-product.php' )	.../template.php:724
8	1.0636	25976016	do_action( )	.../content-single-product.php:60
9	1.0636	25976392	WP_Hook->do_action( )	.../plugin.php:478
10	1.0636	25976392	WP_Hook->apply_filters( )	.../class-wp-hook.php:312
11	1.0697	25981328	woocommerce_template_single_add_to_cart( )	.../class-wp-hook.php:288
12	1.0697	25981384	do_action( )	.../wc-template-functions.php:1576
13	1.0697	25981760	WP_Hook->do_action( )	.../plugin.php:478
14	1.0697	25981760	WP_Hook->apply_filters( )	.../class-wp-hook.php:312
15	1.0697	25982888	woocommerce_simple_add_to_cart( )	.../class-wp-hook.php:288
16	1.0697	25982888	wc_get_template( )	.../wc-template-functions.php:1585
17	1.0698	25984032	include( '/var/www/foxbox/wp-content/plugins/woocommerce/templates/single-product/add-to-cart/simple.php' )	.../wc-core-functions.php:251
18	1.0710	25988152	do_action( )	.../simple.php:33
19	1.0710	25988528	WP_Hook->do_action( )	.../plugin.php:478
20	1.0710	25988528	WP_Hook->apply_filters( )	.../class-wp-hook.php:312
21	1.0710	25989656	Alg_WC_Product_Open_Pricing_Core->add_open_price_input_field_to_frontend( )	.../class-wp-hook.php:288
22	1.0766	26000544	apply_filters( )	.../class-alg-wc-product-open-pricing-core.php:611
23	1.0766	26000944	WP_Hook->apply_filters( )	.../plugin.php:206
24	1.0766	26001696	Alg_WC_Product_Open_Pricing_Core->convert_price_currency_switcher( )	.../class-wp-hook.php:288
25	1.0767	26002072	alg_convert_price( )	.../class-alg-wc-product-open-pricing-core.php:280

I’m not sure if this can be resolved but I figured I’d report it and see whether anything can be done.

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