Native Compiler Return Value: [BC30494] Line Is Too Long

I'm developing a very big and complex P&L report in RS2005 for a big bank which suppose to have 20 tables with around 12 groupings per table. This is similar like having or combining 20 reports in one big report with massive data from Analysis Services 2005 data source.

The report was successfully compiled only up to the fourth table. When I added the fifth table by copying and pasting from the fourth table and then compiled the report in Dev Studio, I've got the following error message:

An error occurred during local report processing. The definition of the report '/Profit and Loss' is invalid. An unexpected error occurred while compiling the expressions. Native compiler return value: '[BC30494] Line is too long.'.

I have carefully made sure that the fifth table has exactly the same definition as the fourth table which I copied from and which was successfully compiled.

The rdl file size is around 2.5MB with only 5 tables and if I eventually adds up to 20 tables I would expect the rdl file size could be around 10MB, which is quite large compared to normal reports.

Even though it seems does not make sense, I suspect the rdl file size getting too big for the compiler to compile the report.

Is there any maximum rdl size limit that RS2005 compiler can compile? Or any idea why this error happens?

Thanks