mgeise

It likely has something to do with you passing a value into the query for your report and JasperReports is expecting it to be a string but you are passing in a date or something.  You might play with the values that you are passing in your where clause, etc. to see if removing one clears the issue and then you will be able to pinpoint the cause.

Adding as an answer, instead of a comment...Thanks for posting the solution you found!
"In  webapps/jasperserver/WEB-INF/classes/esapi/security-config.properties/validation.properties you have to set: Validator.ValidSQL = ^{s*(?i)(withs+.*)?(select|call|exec(ute)?)s+[^;]+}$ to allow for  {call "sp_name"(...)} And IT WORKS! Thanks a lot for responsiveness"
 

Unfortunately the Community Edition is not yet available for OpenShift.  We have some open issues with the OpenShift team that we are holding up for in our work to get the Community Edition available for this platform.

HTML doesn't work that way.  Images are not embedded in the HTML, they are referenced from a location.  You might consider a PDF if this is one of your requirements.

Typically the printer driver manages how pages that are bigger than the paper size are printed.  Will it print normally? Well, that depends on how you normally want to print it.  Consider that if you had a giant DB schema want to print it.  Consider if you had a giant DB schema diagram that you wanted to print that was X pages long by Y pages wide (when compared to your paper size) - you would need to allow it to print down and across or across and then down - eventually fitting all of the pages back together so you could se how it is all connected.  However, if you had a plotter - like what is used to print blueprints, etc. - it might all be on one giant page.  The same applies here.  Try printing a legal size document on letter size paper and you may see better what will actually happen  
Yes, pdf supports larger page sizes.  HTML is not restricted as it is basically X pixels by X pixels wide and viewing it will then depend on your browser/computer resolution, so your solution of dynamically making the page wider is a good one for HTML.

Please use the following:  http://community.jaspersoft.com/project/jasperreports-library/resources
This will take you to sourceforge for the info.  We will be pulling this content into the new community site very soon.

You might try using the HTML Component and create an iFrame that renders the site that you want.  If you are using the commercial server, the dashboard designer allows you to add a special content object that I believe is referred to as a custom URL which does the trick.