SYMPTOMS:
When installing Cognos per Upgrade Guide (Changepoint Release 2012 SP2) when going under Enterprise Cognos>Cognos Connections> click on Launch we received the following error (also no images came up on the screen):

ERROR/WARNING MESSAGES:
Object expected -- cognosisapi.dll

Random images on the Cognos toolbar do not appear correctly.

REASON:
Cognos gateway was not installed on each Changepoint enterprise web server


RESOLUTION:
When using Cognos/Changepoint in a load balanced environment, ensure that the Cognos gateway is installed on all web servers that has the enterprise website files installed.