Blog and Sections Error

In Runway I was going to use sections to create separate English and Spanish blogs. Then I changed my mind and set up an English and Spanish blog. When I deleted the two Sections I'd created previously I got this error.

Fatal error: Call to a member function id() on a non-object in /Users/andyclark/Sites/conil/public/perch/addons/apps/perch_blog/modes/section.list.pre.php on line 25

So I updated Perch to the latest version, logged in and now I get the error below when I try to go to Apps / Blog?

Fatal error: Call to a member function setSlug() on a non-object in /Users/andyclark/Sites/conil/public/perch/addons/apps/perch_blog/modes/list.pre.php on line 37

I suspect the two are linked. The existing text blog posts I have created are still displaying.

debug message

Time    Δ   Debug Message
0.537   0   [1] SELECT * FROM perch2_pages WHERE pagePath='/perch/core/runway/start.php' LIMIT 1
0.6572  0.1202  [135] SELECT p.pagePath, pr.routePattern, pr.routeRegExp, p.pageTemplate FROM perch2_pages p LEFT JOIN perch2_page_routes pr ON p.pageID=pr.pageID ORDER BY pr.routeOrder ASC, p.pagePath ASC
0.6589  0.0017  Matched page: /en/blog, so not using routes.
0.6591  0.0001  Using master page: /templates/pages/en/blog/index.php
0.6876  0.0285  [1] SELECT * FROM perch2_pages WHERE pagePath='/en/blog' LIMIT 1
0.6895  0.0019  Using template: /templates/pages/attributes/default.html
0.7165  0.027   Using sub-template: /templates/pages/attributes/seo.html
0.7245  0.008   Using sub-template: /templates/pages/attributes/facebook.html
0.7349  0.0104  Using sub-template: /templates/pages/attributes/twitter.html
0.7496  0.0148  Using template: /templates/search/search-form.html
0.8341  0.0844  [1] SELECT DISTINCT idx.itemID FROM perch2_blog_index idx JOIN perch2_blog_posts main ON idx.itemID=main.postID AND idx.itemKey='postID' AND (idx.indexKey='_category' AND idx.indexValue LIKE 'blog/attractions/%' OR idx.indexKey='_category' AND idx.indexValue='blog/attractions/')
0.845   0.0109  [1] SELECT blogID FROM perch2_blogs WHERE blogSlug='english' LIMIT 1
0.8454  0.0004  [1] SELECT SQL_CALC_FOUND_ROWS DISTINCT tbl.* FROM ( SELECT idx.itemID, main.*, idx2.indexValue as sortval FROM perch2_blog_index idx JOIN perch2_blog_posts main ON idx.itemID=main.postID AND idx.itemKey='postID' JOIN perch2_blog_index idx2 ON idx.itemID=idx2.itemID AND idx.itemKey='postID' AND idx2.indexKey='postDateTime' AND idx.itemID IN ('7') WHERE 1=1 AND idx.itemID=idx2.itemID AND idx.itemKey=idx2.itemKey GROUP BY idx.itemID, idx2.indexValue, postID ) as tbl WHERE ( blogID=3 AND postStatus='Published' AND postDateTime<='2016-04-01 17:55:00' ) GROUP BY itemID, sortval ORDER BY sortval DESC LIMIT 0, 10
0.9454  0.1 [1] SELECT FOUND_ROWS() AS `count`
1.003   0.0576  [60] SELECT DISTINCT settingID, settingValue FROM perch2_settings WHERE userID=0
1.0133  0.0103  [1] Using template: /templates/blog/post_in_list.html
1.0311  0.0178  [1] SELECT * FROM perch2_blog_sections ORDER BY sectionTitle ASC
1.0324  0.0012  [2] SELECT * FROM perch2_blogs ORDER BY blogTitle ASC
1.0553  0.0229  [1] SELECT setID FROM perch2_category_sets WHERE setSlug='blog' LIMIT 1
1.0557  0.0003  [1] SELECT main.* , COALESCE(cc.countValue,0) AS `count.blog.post` FROM perch2_categories main LEFT OUTER JOIN perch2_category_counts cc ON cc.catID=main.catID WHERE 1=1 AND setID=21 AND (cc.countType='blog.post' OR cc.countType IS NULL) AND cc.countValue > 0 ORDER BY catTreePosition ASC
1.0567  0.0011  [1] Using template: /templates/blog/category_link.html
1.0911  0.0344  [23] SELECT regionKey, regionHTML FROM perch2_content_regions WHERE regionPage='/en/blog' OR regionPage='*' ORDER BY regionPage DESC