Urgent please

Hello, after upgrading i tried to edit an existing category but then i got this message

TableK2Category: :store failed
Unknown column 'language' in 'field list' SQL=UPDATE `americas_k2_categories` SET `name`='National Post',`alias`='national-post',`description`='',`parent`='128',`extraFieldsGroup`='0',`published`='1',`access`='1',`params`='{\"inheritFrom\":\"9\",\"theme\":\"\",\"num_leading_items\":\"2\",\"num_leading_columns\":\"1\",\"leadingImgSize\":\"Large\",\"num_primary_items\":\"4\",\"num_primary_columns\":\"2\",\"primaryImgSize\":\"Medium\",\"num_secondary_items\":\"4\",\"num_secondary_columns\":\"1\",\"secondaryImgSize\":\"Small\",\"num_links\":\"4\",\"num_links_columns\":\"1\",\"linksImgSize\":\"XSmall\",\"catCatalogMode\":\"0\",\"catFeaturedItems\":\"1\",\"catOrdering\":\"\",\"catPagination\":\"2\",\"catPaginationResults\":\"1\",\"catTitle\":\"1\",\"catTitleItemCounter\":\"1\",\"catDescription\":\"1\",\"catImage\":\"1\",\"catFeedLink\":\"1\",\"feedLink\":\"1\",\"subCategories\":\"1\",\"subCatColumns\":\"2\",\"subCatOrdering\":\"\",\"subCatTitle\":\"1\",\"subCatTitleItemCounter\":\"1\",\"subCatDescription\":\"1\",\"subCatImage\":\"1\",\"itemImageXS\":\"\",\"itemImageS\":\"\",\"itemImageM\":\"\",\"itemImageL\":\"\",\"itemImageXL\":\"\",\"catItemTitle\":\"1\",\"catItemTitleLinked\":\"1\",\"catItemFeaturedNotice\":\"0\",\"catItemAuthor\":\"1\",\"catItemDateCreated\":\"1\",\"catItemRating\":\"0\",\"catItemImage\":\"1\",\"catItemIntroText\":\"1\",\"catItemIntroTextWordLimit\":\"\",\"catItemExtraFields\":\"0\",\"catItemHits\":\"0\",\"catItemCategory\":\"1\",\"catItemTags\":\"1\",\"catItemAttachments\":\"0\",\"catItemAttachmentsCounter\":\"0\",\"catItemVideo\":\"0\",\"catItemVideoWidth\":\"\",\"catItemVideoHeight\":\"\",\"catItemAudioWidth\":\"\",\"catItemAudioHeight\":\"\",\"catItemVideoAutoPlay\":\"0\",\"catItemImageGallery\":\"0\",\"catItemDateModified\":\"0\",\"catItemReadMore\":\"1\",\"catItemCommentsAnchor\":\"1\",\"catItemK2Plugins\":\"1\",\"itemDateCreated\":\"1\",\"itemTitle\":\"1\",\"itemFeaturedNotice\":\"1\",\"itemAuthor\":\"1\",\"itemFontResizer\":\"1\",\"itemPrintButton\":\"1\",\"itemEmailButton\":\"1\",\"itemSocialButton\":\"1\",\"itemVideoAnchor\":\"1\",\"itemImageGalleryAnchor\":\"1\",\"itemCommentsAnchor\":\"1\",\"itemRating\":\"1\",\"itemImage\":\"1\",\"itemImgSize\":\"Large\",\"itemImageMainCaption\":\"1\",\"itemImageMainCredits\":\"1\",\"itemIntroText\":\"1\",\"itemFullText\":\"1\",\"itemExtraFields\":\"1\",\"itemDateModified\":\"1\",\"itemHits\":\"1\",\"itemCategory\":\"1\",\"itemTags\":\"1\",\"itemAttachments\":\"1\",\"itemAttachmentsCounter\":\"1\",\"itemVideo\":\"1\",\"itemVideoWidth\":\"\",\"itemVideoHeight\":\"\",\"itemAudioWidth\":\"\",\"itemAudioHeight\":\"\",\"itemVideoAutoPlay\":\"0\",\"itemVideoCaption\":\"1\",\"itemVideoCredits\":\"1\",\"itemImageGallery\":\"1\",\"itemNavigation\":\"1\",\"itemComments\":\"1\",\"itemTwitterButton\":\"1\",\"itemFacebookButton\":\"1\",\"itemGooglePlusOneButton\":\"1\",\"itemAuthorBlock\":\"1\",\"itemAuthorImage\":\"1\",\"itemAuthorDescription\":\"1\",\"itemAuthorURL\":\"1\",\"itemAuthorEmail\":\"0\",\"itemAuthorLatest\":\"1\",\"itemAuthorLatestLimit\":\"5\",\"itemRelated\":\"1\",\"itemRelatedLimit\":\"5\",\"itemRelatedTitle\":\"1\",\"itemRelatedCategory\":\"0\",\"itemRelatedImageSize\":\"0\",\"itemRelatedIntrotext\":\"0\",\"itemRelatedFulltext\":\"0\",\"itemRelatedAuthor\":\"0\",\"itemRelatedMedia\":\"0\",\"itemRelatedImageGallery\":\"0\",\"itemK2Plugins\":\"1\",\"catMetaDesc\":\"\",\"catMetaKey\":\"\",\"catMetaRobots\":\"\",\"catMetaAuthor\":\"\"}',`language`='*' WHERE `id`='452'


meaning i cannot edit my categories anymore

Check the #####_k2_categories table if your missing a 'language' column you need to add it. I had the same issue with my move from 1.5 to 1.7.