Коллеги, добрый день!
Прошу Вас помочь, периодически возникает ошибка... В логах ничего не видно...
Вот с каким кодом выводит ошибку:
Код:

<HTML dir="ltr">
<HEAD><meta name="GENERATOR" content="Microsoft SharePoint" /><meta name="progid" content="SharePoint.WebPartPage.Document" /><meta HTTP-EQUIV="Content-Type" content="text/html; charset=utf-8" /><meta HTTP-EQUIV="Expires" content="0" /><meta name="ROBOTS" content="NOHTMLINDEX" /><title>
Ошибка
</title><link rel="stylesheet" type="text/css" href="/_layouts/1049/styles/core.css?rev=V3foww59KE9gVgSGgi2nQQ%3D%3D"/>
<script type="text/javascript" language="javascript" src="/_layouts/1049/init.js?rev=kHrUTuJYSpnowNBCXdXSeQ%3D%3D"></script>
<script type="text/javascript" language="javascript" src="/_layouts/1049/core.js?rev=X1M8EQRrpQQcQsEPCivSMA%3D%3D"></script>
<meta name="Robots" content="NOINDEX " />
<meta name="SharePointError" content=""/>
</HEAD>
<BODY scroll="yes" onload="javascript:if (typeof(_spBodyOnLoadWrapper) != 'undefined') _spBodyOnLoadWrapper();">
<form name="aspnetForm" method="post" action="error.aspx?List=%7bD7810D08-F8D2-4A79-8E2C-D3669B4699CB%7d&Field=_x0414__x0430__x0442__x0430__x00" id="aspnetForm" onsubmit="return _spFormOnSubmitWrapper();">
<div>
<input type="hidden" name="__VIEWSTATE" id="__VIEWSTATE" value="/wEPDwUKLTU2NjkxODU3M2RkcN/ObaE1LKdZlvCxFSl8JQ5tnr4=" />
</div>
<TABLE class="ms-main" CELLPADDING=0 CELLSPACING=0 BORDER=0 WIDTH="100%" HEIGHT="100%">
<tr><td>
<table CELLPADDING=0 CELLSPACING=0 BORDER=0 WIDTH="100%">
<tr>
<td colspan=4 class="ms-globalbreadcrumb" align="right">
<a href="javascript:TopHelpButtonClick('NavBarHelpHome')" id="ctl00_PlaceHolderGlobalNavigation_TopHelpLink" AccessKey="6" title="Справка (в новом окне)"><img src="/_layouts/images/helpicon.gif" align="absmiddle" border="0" alt="Справка (в новом окне)" /></a>
</td>
</tr>
</table>
</td></tr>
<tr>
<td class="ms-globalTitleArea">
<table width=100% cellpadding=0 cellspacing=0 border=0>
<tr>
<td id="GlobalTitleAreaImage" class="ms-titleimagearea"><img id="onetidHeadbnnr0" src="/_layouts/images/titlegraphic.gif" alt="" /></td>
<td class="ms-sitetitle" width=100%>
</td>
<td style="padding-top:8px;" valign=top>
</td>
</tr>
</table>
</td>
</tr>
<TR>
<TD id="onetIdTopNavBarContainer" WIDTH=100% class="ms-bannerContainer">
</TD>
</TR>
<TR height="100%"><TD><TABLE width="100%" height="100%" cellspacing="0" cellpadding="0">
<tr>
<td class="ms-titlearealeft" id="TitleAreaImageCell" valign="middle" nowrap><div style="height:100%" class="ms-titleareaframe"></div></td>
<td class="ms-titleareaframe" id="TitleAreaFrameClass">
<table cellpadding=0 height=100% width=100% cellspacing=0>
<tr><td class="ms-areaseparatorleft"><IMG SRC="/_layouts/images/blank.gif" width=1 height=1 alt=""></td></tr>
</table>
</td>
<td valign=top id="onetidPageTitleAreaFrame" class='ms-areaseparator' nowrap width="100%">
<table id="onetidPageTitleAreaTable" cellpadding=0 cellspacing=0 width=100% border="0">
<tr>
<td valign="top" class="ms-titlearea">
<a href="http://vskportal2/SiteDirectory/studyportal/vebinar_uzel" id="ctl00_PlaceHolderTitleBreadcrumb_idSimpleGoBackToHome">Вернуться на узел</a>
</td>
</tr>
<tr>
<td height=100% valign=top ID=onetidPageTitle class="ms-pagetitle">
<h2 class="ms-pagetitle">
Ошибка
</h2>
</td>
</tr>
</table>
</td>
<td class="ms-titlearearight">
<div class='ms-areaseparatorright'><IMG SRC="/_layouts/images/blank.gif" width=8 height=100% alt=""></div>
</td>
</tr>
<TR>
<TD class="ms-leftareacell" valign=top height=100% id="LeftNavigationAreaCell">
<table class=ms-nav width=100% height=100% cellpadding=0 cellspacing=0>
<tr>
<td>
<TABLE height="100%" class=ms-navframe CELLPADDING=0 CELLSPACING=0 border="0">
<tr valign="top">
<td width="4px"><IMG SRC="/_layouts/images/blank.gif" width=4 height=1 alt=""></td>
<td valign="top" width="100%">
</td>
</tr>
<tr><td colspan=2><IMG SRC="/_layouts/images/blank.gif" width=138 height=1 alt=""></td></tr>
</TABLE>
</td>
<td></td>
</tr>
</table>
</TD>
<td>
<div class='ms-areaseparatorleft'><IMG SRC="/_layouts/images/blank.gif" width=8 height=100% alt=""></div>
</td>
<td class='ms-formareaframe' valign="top">
<TABLE width="100%" border="0" cellspacing="0" cellpadding="0" class="ms-propertysheet">
<TR valign="top" >
<TD class="ms-descriptiontext" width="100%">
</TD>
<TD ID=onetidYPadding width="10px"><IMG SRC="/_layouts/images/blank.gif" width=10 height=1 alt=""></TD>
</TR>
<TR >
<TD ID=onetidMainBodyPadding height="8px"><IMG SRC="/_layouts/images/blank.gif" width=1 height=8 alt=""></TD>
</TR>
<tr>
<td valign="top" height="100%">
<A name="mainContent"></A>
<table width=100% border=0 class="ms-titleareaframe" cellpadding=0>
<TR>
<TD valign=top width="100%" style="padding-top: 10px" class="ms-descriptiontext">
<span id="ctl00_PlaceHolderMain_LabelMessage">Не удалось завершить эту операцию.<br><br>Повторите попытку.</span>
<P><span class="ms-descriptiontext">
<span id="ctl00_PlaceHolderMain_helptopic_troubleshooting"><A Title="Устранение неполадок в работе службы Windows SharePoint Services. - открытие в новом окне" HREF="javascript:HelpWindowKey('troubleshooting')">Устранение неполадок в работе службы Windows SharePoint Services.</A></span>
</span>
</TD>
</TR>
</table>
<script type="text/javascript" language="JavaScript">
var gearPage = document.getElementById('GearPage');
if(null != gearPage)
{
gearPage.parentNode.removeChild(gearPage);
document.title = "Ошибка";
}
</script>
</td>
</tr>
</table>
</td>
<td class="ms-rightareacell">
<div class='ms-areaseparatorright'><IMG SRC="/_layouts/images/blank.gif" width=8 height=100% alt=""></div>
</td>
</TR>
<tr>
<td class="ms-pagebottommarginleft"><IMG SRC="/_layouts/images/blank.gif" width=1 height=10 alt=""></td>
<td class="ms-pagebottommargin"><IMG SRC="/_layouts/images/blank.gif" width=1 height=10 alt=""></td>
<td class="ms-bodyareapagemargin"><IMG SRC="/_layouts/images/blank.gif" width=1 height=10 alt=""></td>
<td class="ms-pagebottommarginright"><IMG SRC="/_layouts/images/blank.gif" width=1 height=10 alt=""></td>
</tr>
</TABLE></TD></TR>
</TABLE>
<input type="text" name="__spDummyText1" style="display:none;" size=1/>
<input type="text" name="__spDummyText2" style="display:none;" size=1/>
</form>
</BODY>
</HTML>
В чем может быть причина и как это лечится?
Огромное спасибо!