SharePoint 2010 list missing though it shows in workspace with no issues

Hi guys,

Ok...weird issue, here. When I go to my Project Tasks list:


I get a very generic error with only an option to manage web parts. There are no site settings, options to add a web part, or anything. It's completely gone. However, if I go to the default Change Management workspace:


the web part for Project Tasks is visible (as well as the Gantt chart), as well as all the tasks. I can click on each one and get to it with no issues. I'm not understanding what the issue is.  If I mouse over the Project Tasks heading, I get the same URL as the one that's broken. Can someone please assist? Any help would be greatly appreciated.

Roy BeneVP/Director - IT | ISOAsked:
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Daniel KlineSr. SharePoint DeveloperCommented:
Go into SharePoint designer and edit http://spserver/sites/sitename/IT/chngmngmt/Lists/ProjectTasks/gantt.aspx

Delete the offending Tasklist web part.

Reinsert the web part.

More than likely, the parameters in the aspx page for the web part got corrupted and reinserting it with the default configuration will most likely solve the problem.
Roy BeneVP/Director - IT | ISOAuthor Commented:
The issue is that I have 3.0 administrator unfortunately. I don't have SP Designer.
Roy BeneVP/Director - IT | ISOAuthor Commented:
Installing SP Designer now.

Forgive the ignorance, here, but if I delete the web part, will it not be gone? Won't I have to rebuild it? Again, it works when viewing the default.aspx in change management.
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Daniel KlineSr. SharePoint DeveloperCommented:
There is no shame in ignorance when you are asking for help... it's called learning.  

If you look at your URLs you will see that there are 2 different ASPX pages that are being called - one works one does not.  The Web Part works on one, but not the other page.  As you correctly identified, the web part is working correctly, however the code that embeds the web part in the broken page is likely corrupted.  If you delete the web part from that page (not the web part library) and reinsert it, SharePoint will set the default parameters and then when you open the page, you can make any adjustments to the parameters for the web part because it will load and render on the page successfully.

Let me know if you need more guidance.
Daniel KlineSr. SharePoint DeveloperCommented:
BTW, in SharePoint Designer, select the entire web part by right click-select tag. and delete it... but don't delete the web part zone.  That way you can easily reinstall the web part (in the now empty zone) without having to create the web part zone.   When you remove parts from SharePoint, always save before you try to reinsert... SharePoint Designer can be annoying and confusing when you are first learning to use it.

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Roy BeneVP/Director - IT | ISOAuthor Commented:
Daniel, thank you so much. I genuinely appreciate your expertise and patience. I will let you know how things are going as soon as this reboot is complete.

Again, thank you sir.
Roy BeneVP/Director - IT | ISOAuthor Commented:
Ok..I think I'm more on track now. If you look at the newly attached image, when I Edit and select tag, then delete the web part, and try to insert the Project Tasks web part again, the error in the image is what I end up with.

 Do I need to publish the page with the part deleted and then trying inserting from my browser? Again, Daniel, thanks!
Roy BeneVP/Director - IT | ISOAuthor Commented:
Also, to add to this, if I want to publish, what is the easiest way that you recommend doing so? It doesn't appear as cut and dry as I thought it would.
Roy BeneVP/Director - IT | ISOAuthor Commented:

I figured it out!!! Lol. Thank you SOOOOOOOOOOOOOOOOOOOOOOOOOOO much for your help! I just had to tinker a bit, but I got it!
Roy BeneVP/Director - IT | ISOAuthor Commented:
Daniel was top-notch and right on in his answer. I truly appreciated all his patience and guidance and would most definitely rely on him for SharePoint information in the future.
Daniel KlineSr. SharePoint DeveloperCommented:
Thanks... I'm glad I was able to assist.  Ping me back any time SharePoint stops being fun.
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