error message on page backend

Could you post a screenshot?

screenshot

in the html sourcecode its this:

<div id="screen-options-wrap" class="hidden" tabindex="-1" aria-label="Ansichtsoptionen Tab">
		<form id="adv-settings" action="" method="post">
		<form id="adv-settings" action="" method="post"><h5>Anzeigen</h5><div class="metabox-prefs"><label for='slim_p2_01-hide'><input class='hide-postbox-tog' name='slim_p2_01-hide' type='checkbox' id='slim_p2_01-hide' value='slim_p2_01' checked="checked" />Echte Besucher (Diagramm)</label><label for='slim_p2_02-hide'><input class='hide-postbox-tog' name='slim_p2_02-hide' type='checkbox' id='slim_p2_02-hide' value='slim_p2_02' checked="checked" />Audience Overview</label><label for='slim_p2_03-hide'><input class='hide-postbox-tog' name='slim_p2_03-hide' type='checkbox' id='slim_p2_03-hide' value='slim_p2_03' checked="checked" />Top-Sprachen</label><label for='slim_p2_04-hide'><input class='hide-postbox-tog' name='slim_p2_04-hide' type='checkbox' id='slim_p2_04-hide' value='slim_p2_04' checked="checked" />Top-Browser</label><label for='slim_p2_06-hide'><input class='hide-postbox-tog' name='slim_p2_06-hide' type='checkbox' id='slim_p2_06-hide' value='slim_p2_06' checked="checked" />Top-Betriebssysteme</label><label for='slim_p2_05-hide'><input class='hide-postbox-tog' name='slim_p2_05-hide' type='checkbox' id='slim_p2_05-hide' value='slim_p2_05' />Top-Internetprovider</label><label for='slim_p2_07-hide'><input class='hide-postbox-tog' name='slim_p2_07-hide' type='checkbox' id='slim_p2_07-hide' value='slim_p2_07' />Top-Bildschirmaufl?sungen</label><label for='slim_p2_09-hide'><input class='hide-postbox-tog' name='slim_p2_09-hide' type='checkbox' id='slim_p2_09-hide' value='slim_p2_09' />Browser-F?higkeiten</label><label for='slim_p2_10-hide'><input class='hide-postbox-tog' name='slim_p2_10-hide' type='checkbox' id='slim_p2_10-hide' value='slim_p2_10' checked="checked" />Top-L?nder</label><label for='slim_p2_12-hide'><input class='hide-postbox-tog' name='slim_p2_12-hide' type='checkbox' id='slim_p2_12-hide' value='slim_p2_12' checked="checked" />Besuchsdauer</label><label for='slim_p2_13-hide'><input class='hide-postbox-tog' name='slim_p2_13-hide' type='checkbox' id='slim_p2_13-hide' value='slim_p2_13' />Letzte L?nder</label><label for='slim_p2_14-hide'><input class='hide-postbox-tog' name='slim_p2_14-hide' type='checkbox' id='slim_p2_14-hide' value='slim_p2_14' />Letzte Bildschirmaufl?sungen</label><label for='slim_p2_15-hide'><input class='hide-postbox-tog' name='slim_p2_15-hide' type='checkbox' id='slim_p2_15-hide' value='slim_p2_15' />Letzte Betriebssysteme</label><label for='slim_p2_16-hide'><input class='hide-postbox-tog' name='slim_p2_16-hide' type='checkbox' id='slim_p2_16-hide' value='slim_p2_16' />Letzte Browser</label><label for='slim_p2_17-hide'><input class='hide-postbox-tog' name='slim_p2_17-hide' type='checkbox' id='slim_p2_17-hide' value='slim_p2_17' />Letzte Sprachen</label><label for='slim_p2_18-hide'><input class='hide-postbox-tog' name='slim_p2_18-hide' type='checkbox' id='slim_p2_18-hide' value='slim_p2_18' />Top-Browserfamilien</label><label for='slim_p2_19-hide'><input class='hide-postbox-tog' name='slim_p2_19-hide' type='checkbox' id='slim_p2_19-hide' value='slim_p2_19' />Top-Betriebssysteme</label><label for='slim_p2_20-hide'><input class='hide-postbox-tog' name='slim_p2_20-hide' type='checkbox' id='slim_p2_20-hide' value='slim_p2_20' />Letzte Benutzer</label><label for='slim_p2_21-hide'><input class='hide-postbox-tog' name='slim_p2_21-hide' type='checkbox' id='slim_p2_21-hide' value='slim_p2_21' />Top-Benutzer</label><input type="hidden" id="closedpostboxesnonce" name="closedpostboxesnonce" value="8e13a773c3" /><input type="hidden" name="_wp_http_referer" value="/Wordpress/wp-admin/admin.php?page=wp-slim-view-3" /></div></form>		<div><input type="hidden" id="screenoptionnonce" name="screenoptionnonce" value="e19e7a397f" /></div>
		</form>
		</div>
				</div>
				<div id="screen-meta-links">
					<div id="contextual-help-link-wrap" class="hide-if-no-js screen-meta-toggle">
			<a href="#contextual-help-wrap" id="contextual-help-link" class="show-settings" aria-controls="contextual-help-wrap" aria-expanded="false">Hilfe</a>
			</div>
					<div id="screen-options-link-wrap" class="hide-if-no-js screen-meta-toggle">
			<a href="#screen-options-wrap" id="show-settings-link" class="show-settings" aria-controls="screen-options-wrap" aria-expanded="false">Optionen</a>
			</div>
				</div>
			<div class="error fade">
		<p>Operation timed out after 5 seconds with 0 bytes received</p>
	</div>

<div class="wrap slimstat">
	<h2>Audience</h2>

	<form action="options.php?page=wp-slim-view-3" method="post" id="slimstat-filters-form">
		<fieldset id="slimstat-filters"><select name="f" id="slimstat-filter-name"><option value='no_filter_selected_1'>?</option><option value='browser'>Browser</option><option value='country'>L?nder-Code</option><option value='ip'>IP-Adresse</option><option value='searchterms'>Suchbegriffe</option><option value='language'>Sprach-Kodierung</option><option value='platform'>Betriebssystem</option><option value='resource'>Permalink</option><option value='domain'>Dom?ne</option><option value='referer'>Herkunft</option><option value='user'>Besuchername</option><option value='page_performance'>Page Speed</option><option value='no_filter_selected_2'>?</option><option value='no_filter_selected_3'>-- Erweiterte Filter --</option><option value='plugins'>Browser-F?higkeiten</option><option value='version'>Browser-Version</option><option value='type'>Browser-Typ</option><option value='user_agent'>User Agent</option><option value='colordepth'>Farbtiefe</option><option value='css_version'>CSS Version</option><option value='notes'>Eigenschaften Seitenaufrufe</option><option value='server_latency'>Server Latency</option><option value='outbound_resource'>Ausgehender Link</option><option value='author'>Autor der Seiten</option><option value='category'>Kategorie-ID der Seite</option><option value='other_ip'>Ursprüngliche IP</option><option value='content_type'>Inhalt der Ressource</option><option value='content_id'>Ressourcen-ID</option><option value='resolution'>Bildschirm-Aufl?sung</option><option value='visit_id'>Besuchs-ID</option><option value='interval_direction'>+/-</option></select><select name="o" id="slimstat-filter-operator"><option value="equals">entspricht</option><option value="is_not_equal_to">ist ungleich zu</option><option value="contains">enth?lt</option><option value="includes_in_set">is included in</option><option value="does_not_contain">enth?lt nicht</option><option value="starts_with">beginnt mit</option><option value="ends_with">endet mit</option><option value="sounds_like">?hnelt</option><option value="is_greater_than">ist gr?sser als</option><option value="is_less_than">ist kleiner als</option><option value="between">is between (x,y)</option><option value="matches">entspricht</option><option value="does_not_match">entspricht nicht</option><option value="is_empty">ist leer</option><option value="is_not_empty">ist nicht leer</option></select><input type="text" class="text" name="v" id="slimstat-filter-value" value="" size="20"><input type="submit" value="Anwenden" class="button-secondary">		</fieldset><!-- slimstat-filters -->

		<fieldset id="slimstat-date-filters" class="wp-ui-highlight">
			<a href="#">01-31-15 - 02-16-15</a>

And that only appers when you access Slimstat’s reports?

oh, no. I’m sorry it’s on every menu. so it must be another plugin I think ?? Thx for your advice. Im searching further….

Yeah, that’s what I thought. That HTML markup is not part of our plugin ??

Okay, I found out by disabling the plugins one by one. Its the
slideshow gallery
Version 1.5.3 | Von Tribulant Software

so I can search there.

Thanks for letting us know.