Sorry nobu, but I actually did update the module before I posted the first time but I updated again just in case. Warnings still exist after updating module:
Module Events updated successfully.
Back to Module Administration page
Warning [Xoops]: Smarty error: unable to read resource: "db:eguide_item.html" in file class/smarty/Smarty.class.php line 1084
Warning [Xoops]: Smarty error: unable to read resource: "db:eguide_item.html" in file class/smarty/Smarty.class.php line 1084
Warning [Xoops]: Smarty error: unable to read resource: "db:eguide_item.html" in file class/smarty/Smarty.class.php line 1084

I also added an event. After adding event - I get the following errors:
Notice [PHP]: Undefined variable: sets in file modules/eguide/admin.php line 174
Warning [PHP]: Invalid argument supplied for foreach() in file modules/eguide/admin.php line 174

In addition when adding an event the calendar button does not work when I click on it. No calendar and I get a javascript error in both Firefox and Internet Explorer:
Error: Calendar is not defined
Source File: /modules/eguide/admin.php Line: 156
Here is line 156 (browser source code): var cal = new Calendar(true, 'null', selected, closeHandler);
I also get a javascript error for line 168 (browser source code): Calendar._DN = new Array

I can manually add the date without the calendar but I thought you'd want to know for your own purposes that the errors exist.

I'm not sure if it matters (though maybe to help in your own debugging) when using the XOOPS module Table Logical Check by toshimitsu - I get this:
CheckpPattern This is = xptblparam1 : ( default, xptblparam1, xptblparam2, xptblparam3 )
check result view no judgment comment mysql
SELECT * FROM 273242BJ_tplfile WHERE tpl_file = 'eguide_confirm.html' AND tpl_tplset = 'default'
96 NOTICE tpl_file = 'eguide_confirm.html' AND tpl_tplset = 'default'
tpl_id tpl_refid tpl_module tpl_tplset tpl_file tpl_desc tpl_lastmodified tpl_lastimported tpl_type
375 13 eguide default eguide_confirm.html Reservation Confirmation 1152105338 0 module
373 13 eguide default eguide_confirm.html Event Confirmation Form 1152105338 0 module
No error : Good
No warning : Good
There was NOTICE !!
Maybe the above is not related to the warnings mentioned above but just in case - I wanted you to see.

I am using XOOPS v. 2.2.4, PHP v. 4.3.10, MySQL v. 3.23.58