Cannot get my IAT to run

Hi There,

I have an IAT that was running fine last week. I changed some of the image files and now it will no longer run. It seems to me that it is programmed correctly but I am getting the following error message.

12 System.InvalidCastExceptions Conversion from string" Press "space bar" to being pr" to type "integer is not valid--> system.formatException: Input string was not in a correct format.

at Microsoft.VisualBasic.compilerServices.Conversions. ParseDouble (StringValue, Number Format Info Number Format)
At Microsoft... To integer (string Value) end of inner exception stack trace.

I have no idea what this means. Any help?

Thanks