Can you use the site in the normal way as other users when you are logged in as administrator?
yes

Can you call directly administration functions like???
no.
The website cannot display the page
HTTP 500
Most likely causes:
The website is under maintenance.
The website has a programming error.

What you can try:
Refresh the page.

Go back to the previous page.

More information

thanks alot, now i am stuck i can access my website but when i click on administration menu it shows me an error on the HEADER as HTTP 500 internal SERVER error, i tried to login with other regular user they are working perfectly alright but when i tried to login it through administrator and click on Administration Menu i encounter the error stated above.
thankyou.

i have recently upgraded to 2.30 from 2.0.18.2 everything was working fine, but i think i have messed up mainfile.php and mainfile.dist.php if someone can post their file i can have some idea because i need to do i manually. thanks.

it seems the problem is solved for internet explorer only, while using firefox it seems the problem still persists.

thanks it works :)

actually i did a search but that didnt work,
here is what is loaded in my style.css

body {color: #000; background: #fff; margin: 0; padding: 0;}

table {width: 100%; font-size: small;}
table td {padding: 0; border-width: 0; vertical-align: top; font-family: Verdana, Arial, Helvetica, sans-serif;}

a {color: #666666; text-decoration: none; font-weight: bold; background-color: transparent;}
a:hover {color: #ff6600;}

h1 {}
h2 {}
h3 {}
h4 {}
h5 {}
ul { margin: 2px; padding: 2px; list-style: disc inside; text-align: left;}
ol { margin: 2px; padding: 2px; list-style: decimal inside; text-align: left;}
li { margin-left: 2px; color: #2F5376;}

input.formButton {}

.item {border: 1px solid #cccccc;}
.itemHead {padding: 3px; background-color: #2F5376; color: #FFFFFF;}
.itemInfo {text-align: right; padding: 3px; background-color: #efefef}
.itemTitle a {font-size: 130%; font-weight: bold; font-variant: small-caps; color: #ffffff; background-color: transparent;}
.itemPoster {font-size: 90%; font-style:italic;}
.itemPostDate {font-size: 90%; font-style:italic;}
.itemStats {font-size: 90%; font-style:italic;}
.itemBody {padding-left: 5px;}
.itemText {margin-top: 5px; margin-bottom: 5px; line-height: 1.5em;}
.itemText:first-letter {font-size: 133%; font-weight: bold;}
.itemFoot {text-align: right; padding: 3px; background-color: #efefef;}
.itemAdminLink {font-size: 90%;}
.itemPermaLink {font-size: 90%;}

th {background-color: #2F5376; color: #FFFFFF; padding : 2px; vertical-align : middle; font-family: Verdana, Arial, Helvetica, sans-serif;}

td#headerbanner {width: 100%; background-color: #2F5376; vertical-align: middle; text-align:center;}
td#headerbar {border-bottom: 1px solid #dddddd; background-image: url(hbar.gif);}

td#leftcolumn {width: 170px; border-right: 1px solid #cccccc; font-size:12px;}
td#leftcolumn th {background-color: #2F5376; color: #FFFFFF; vertical-align: middle;}
td#leftcolumn div.blockTitle {padding: 3px; background-color: #dddddd; color: #639ACE; font-weight: bold;}
td#leftcolumn div.blockContent {padding: 3px; line-height: 120%; line-height: 120%;}


#centercolumn {font-size: 12px;}
#centercolumn th {background-color: #2F5376; color: #FFFFFF; vertical-align: middle;}

#centerCcolumn, #bottomCcolumn {padding: 0px 3px 1px 3px;}
#centerCcolumn .blockTitle, #bottomCcolumn .blockTitle {padding: 3px; color: #639ACE; font-weight: bold; margin-top: 0px; margin-right: 0px; margin-left: 0px;}
#centerCcolumn .blockContent, #bottomCcolumn .blockContent {border-left: 1px solid #cccccc; border-right: 1px solid #cccccc; border-bottom: 1px solid #dddddd; padding: 3px; margin-right: 0px; margin-left: 0px; margin-bottom: 2px; line-height: 120%;}

#centerLcolumn, #bottomLcolumn, #centerRcolumn, #bottomRcolumn {
width: 50%; padding: 0px 3px 0px 0px;
}
#centerLcolumn .blockTitle, #bottomLcolumn .blockTitle, #centerRcolumn .blockTitle, #bottomRcolumn .blockTitle {
padding: 3px; color: #639ACE; font-weight: bold; margin-top: 0px;
}
#centerLcolumn .blockContent, #centerRcolumn .blockContent, #bottomLcolumn .blockContent, #bottomRcolumn .blockContent {
border-left: 1px solid #cccccc; border-right: 1px solid #cccccc; border-bottom: 1px solid #dddddd; padding: 3px; margin-left: 2px; margin-right: 3px; margin-bottom: 2px; line-height: 120%;
}

div#content {text-align: left; padding: 8px;}

td#rightcolumn {width: 170px; border-left: 1px solid #cccccc; font-size:12px;}
td#rightcolumn th {background-color: #2F5376; color: #FFFFFF; vertical-align: middle;}
td#rightcolumn div.blockTitle {padding: 3px; background-color: #dddddd; color: #639ACE; font-weight: bold;}
td#rightcolumn div.blockContent {padding: 3px; line-height: 120%;}

tr#footerbar {text-align:center; background-image: url(hbar.gif);}

td#mainmenu a {background-color: #e6e6e6; display: block; margin: 0; padding: 4px;}
td#mainmenu a:hover {background-color: #ffffff;}
td#mainmenu a.menuTop {padding-left: 3px; border-top: 1px solid #c0c0c0; border-right: 1px solid #666666; border-bottom: 1px solid #666666; border-left: 1px solid #c0c0c0;}
td#mainmenu a.menuMain {padding-left: 3px; border-right: 1px solid #666666; border-bottom: 1px solid #666666; border-left: 1px solid #c0c0c0;}
td#mainmenu a.menuSub {padding-left: 9px; border-right: 1px solid #666666; border-bottom: 1px solid #666666; border-left: 1px solid #c0c0c0;}

td#usermenu a {background-color: #e6e6e6; display: block; margin: 0; padding: 4px; border-right: 1px solid #666666; border-bottom: 1px solid #666666; border-left: 1px solid #c0c0c0;}
td#usermenu a:hover {background-color: #ffffff;}
td#usermenu a.menuTop {border-top: 1px solid #c0c0c0;}
td#usermenu a.highlight {background-color: #fcc;}



.outer {border: 1px solid #c0c0c0;}
.head {background-color: #c2cdd6; padding: 5px; font-weight: bold;}
.even {background-color: #dee3e7; padding: 5px;}
.odd {background-color: #E9E9E9; padding: 5px;}
.foot {background-color: #c2cdd6; padding: 5px; font-weight: bold;}
tr.even td {background-color: #dee3e7; padding: 5px;}
tr.odd td {background-color: #E9E9E9; padding: 5px;}

div.errorMsg { background-color: #FFCCCC; text-align: center; border-top: 1px solid #DDDDFF; border-left: 1px solid #DDDDFF; border-right: 1px solid #AAAAAA; border-bottom: 1px solid #AAAAAA; font-weight: bold; padding: 10px;}
div.confirmMsg { background-color: #DDFFDF; color: #136C99; text-align: center; border-top: 1px solid #DDDDFF; border-left: 1px solid #DDDDFF; border-right: 1px solid #AAAAAA; border-bottom: 1px solid #AAAAAA; font-weight: bold; padding: 10px;}
div.resultMsg { background-color : #CCCCCC; color: #333333; text-align: center; border-top: 1px solid #c0c0c0; border-left: 1px solid #c0c0c0; font-weight: bold; border-right: 1px solid #666666; border-bottom: 1px solid #666666; padding: 10px;}

div.xoopsCode { background: #FFFFFF; border: 1px inset #000080; font-family: "Courier New",Courier,monospace; padding: 0px 6px 6px 6px; height: 200px; overflow: auto;}
div.xoopsQuote { background: #FFFFFF; border: 1px inset #000080; font-family: "Courier New",Courier,monospace; padding: 0px 6px 6px 6px;}


.comTitle {font-weight: bold; margin-bottom: 2px;}
.comText {padding: 2px;}
.comUserStat {font-size: 10px; color: #2F5376; font-weight:bold; border: 1px solid #c0c0c0; background-color: #ffffff; margin: 2px; padding: 2px;}
.comUserStatCaption {font-weight: normal;}
.comUserStatus {margin-left: 2px; margin-top: 10px; color: #2F5376; font-weight:bold; font-size: 10px;}
.comUserRank {margin: 2px;}
.comUserRankText {font-size: 10px;font-weight:bold;}
.comUserRankImg {border: 0;}
.comUserName {}
.comUserImg {margin: 2px;}
.comDate {font-weight: normal; font-style: italic; font-size: smaller;}
.comDateCaption {font-weight: bold; font-style: normal;}

i have recently upgraded from 2.0.17.1 to 2.0.18.1 i have fixed much of the things like my stats counter etc but i am unable to fix the Main Menu, it shows all the options in single line, is there any way i can get them seperate, 1 option for each line.
thanks in advance.....