如果将ploneformgen数据从1.7.1版本升级到1.7.17版本，会发生什么？

Question

我有一个现有的Plone站点4.1.4和Ploneformgen 1.7.1，在Linux独立安装上工作了两年。在过去的15天里，它还没有出现在浏览器上，尽管我看到它在屏幕上运行着./bin/plonectl fg。每次显示不同的日志。我所做的就是重新启动它，直到它在2-3小时后停止。我得到的最新错误日志：

2015-01-09 10:58:12 ERROR Zope.SiteErrorLog 1420781292.380.372194570069 http://example.com:8081/site/checklist/tinymce-save
Traceback (innermost last):
  Module ZPublisher.Publish, line 126, in publish  
  Module ZPublisher.mapply, line 77, in mapply
  Module ZPublisher.Publish, line 46, in call_object
  Module Products.TinyMCE.browser.browser, line 33, in save
  Module Products.TinyMCE.adapters.Save, line 18, in save
AttributeError: 'NoneType' object has no attribute 'set'

2015-01-09 11:01:06 ERROR Zope.SiteErrorLog 1420781466.020.201924322182 http://example.com:8081/site/checklist/tinymce-save
Traceback (innermost last):
  Module ZPublisher.Publish, line 126, in publish  
  Module ZPublisher.mapply, line 77, in mapply
  Module ZPublisher.Publish, line 46, in call_object
  Module Products.TinyMCE.browser.browser, line 33, in save
  Module Products.TinyMCE.adapters.Save, line 18, in save
AttributeError: 'NoneType' object has no attribute 'set'

2015-01-09 17:20:31 ERROR ZServer Bad HTTP request: 'h'

有什么问题吗？另外，如果我将ploneformgen从现有的1.7.1升级到1.7.17，对现有数据会有什么影响？你知道吗