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An error occurred.

We are sorry, but Gallery Server Pro encountered an error. It has been logged and, if error reporting is enabled, an email describing the problem has been sent to the administrator.

Error: Collection was modified; enumeration operation may not execute.

Error Summary

Url

http://mediathek.mmpr-agentur.com/default.aspx?moid=23297

Timestamp

9/12/2026 12:16:12 PM

Exception Type

System.InvalidOperationException

Message

Collection was modified; enumeration operation may not execute.

Source

mscorlib

Target Site

Void ThrowInvalidOperationException(System.ExceptionResource)

Stack Trace

at System.ThrowHelper.ThrowInvalidOperationException(ExceptionResource resource)
at System.Collections.Generic.List`1.Enumerator.MoveNextRare()
at GalleryServerPro.Business.GalleryObjectCollection.FindAll(GalleryObjectType galleryObjectType)
at GalleryServerPro.Web.Controls.mediaobjectview.RenderMediaObject()
at GalleryServerPro.Web.Controls.mediaobjectview.Page_Load(Object sender, EventArgs e)
at System.Web.UI.Control.OnLoad(EventArgs e)
at System.Web.UI.Control.LoadRecursive()
at System.Web.UI.Control.LoadRecursive()
at System.Web.UI.Control.LoadRecursive()
at System.Web.UI.Control.LoadRecursive()
at System.Web.UI.Control.LoadRecursive()
at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)

App Error ID

-2147483648

Gallery ID

1

HTTP User Agent

Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)

Form Variables

<none>

Cookies

ASP.NET_SessionId

r0qy5wchjp0hotzp4fu5tm0u

Session Variables

ReferringUrl

http://mediathek.mmpr-agentur.com/default.aspx?moid=23297

HostUrl

http://mediathek.mmpr-agentur.com

Server Variables

ALL_HTTP

HTTP_CACHE_CONTROL:max-age=0
HTTP_CONNECTION:keep-alive
HTTP_VIA:1.1 squid-proxy-5b96dc6d46-jxl2v (squid/6.13)
HTTP_ACCEPT:*/*
HTTP_ACCEPT_ENCODING:gzip, br, zstd, deflate
HTTP_COOKIE:ASP.NET_SessionId=r0qy5wchjp0hotzp4fu5tm0u
HTTP_HOST:mediathek.mmpr-agentur.com
HTTP_USER_AGENT:Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
HTTP_X_FORWARDED_FOR:10.8.116.223

ALL_RAW

Cache-Control: max-age=0
Connection: keep-alive
Via: 1.1 squid-proxy-5b96dc6d46-jxl2v (squid/6.13)
Accept: */*
Accept-Encoding: gzip, br, zstd, deflate
Cookie: ASP.NET_SessionId=r0qy5wchjp0hotzp4fu5tm0u
Host: mediathek.mmpr-agentur.com
User-Agent: Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
X-Forwarded-For: 10.8.116.223

APPL_MD_PATH

/LM/W3SVC/257/ROOT

APPL_PHYSICAL_PATH

D:\InetPub\vhosts\agenturm-5336.package\mediathek.mmpr-agentur.com\wwwro ot\

AUTH_TYPE

AUTH_USER

AUTH_PASSWORD

LOGON_USER

REMOTE_USER

CERT_COOKIE

CERT_FLAGS

CERT_ISSUER

CERT_KEYSIZE

CERT_SECRETKEYSIZE

CERT_SERIALNUMBER

CERT_SERVER_ISSUER

CERT_SERVER_SUBJECT

CERT_SUBJECT

CONTENT_LENGTH

0

CONTENT_TYPE

GATEWAY_INTERFACE

CGI/1.1

HTTPS

off

HTTPS_KEYSIZE

HTTPS_SECRETKEYSIZE

HTTPS_SERVER_ISSUER

HTTPS_SERVER_SUBJECT

INSTANCE_ID

257

INSTANCE_META_PATH

/LM/W3SVC/257

LOCAL_ADDR

143.95.252.24

PATH_INFO

/default.aspx

PATH_TRANSLATED

D:\InetPub\vhosts\agenturm-5336.package\mediathek.mmpr-agentur.com\wwwro ot\default.aspx

QUERY_STRING

moid=23297

REMOTE_ADDR

216.73.217.17

REMOTE_HOST

216.73.217.17

REMOTE_PORT

2076

REQUEST_METHOD

GET

SCRIPT_NAME

/default.aspx

SERVER_NAME

mediathek.mmpr-agentur.com

SERVER_PORT

80

SERVER_PORT_SECURE

0

SERVER_PROTOCOL

HTTP/1.1

SERVER_SOFTWARE

Microsoft-IIS/10.0

URL

/default.aspx

HTTP_CACHE_CONTROL

max-age=0

HTTP_CONNECTION

keep-alive

HTTP_VIA

1.1 squid-proxy-5b96dc6d46-jxl2v (squid/6.13)

HTTP_ACCEPT

*/*

HTTP_ACCEPT_ENCODING

gzip, br, zstd, deflate

HTTP_COOKIE

ASP.NET_SessionId=r0qy5wchjp0hotzp4fu5tm0u

HTTP_HOST

mediathek.mmpr-agentur.com

HTTP_USER_AGENT

Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)

HTTP_X_FORWARDED_FOR

10.8.116.223