I get this error when i load the zip file in the k2 item

Fatal error: Call to undefined method SimpleImageGalleryProHelper::wordLimit() in /home/hughiesa/public_html/plugins/content/jw_sigpro/jw_sigpro/includes/helper.php on line 156

I have the latest versions joomla 2.5.1 sig pro 2.5.6 and k2 2.5.4

I really need help I have looked everywhere for and answer there seems to be others with the same problem.  I have two sites doing the same thing.
cheers Nichola

Please disable the Word limit in captions at SIG Pro parameters.

Thank you for reply i have disabled the word limit and the error still remains.
cheers nichola

Fatal error: Call to undefined method SimpleImageGalleryProHelper::wordLimit() in /home/hughiesa/public_html/plugins/content/jw_sigpro/jw_sigpro/includes/helper.php on line 156

surely l someone has an answer to this problem I can't make my websites function properly without simple image gallery my clients are unable to use the K2 component properly and I am having to adjust by using modules inside k2, more work for me!

please can some one help with this issue.
cheers Nichola

In two days we will release 2.5.7 version which will solve this bug.