Combining Multiple IF Queries

[apls2350]

This three IF formulas in the below all work correctly when separated from the others but when combined Excel simply says the formula contains an error. I can't work out what's causing the issue?

=IF($CJ5=0,,IF($CJ5/30<1,((30-$CJ5)*($CG5*'Revenue Forecast Weightings'!$C$4),IF($CJ5/30<2,$H5*'Revenue Forecast Weightings'!$C$4+((60-$CJ5)*$CG5*'Revenue Forecast Weightings'!$C$5),IF($CJ5/30<3,$H5*'Revenue Forecast Weightings'!$C$4+$H5*'Revenue Forecast Weightings'!$C$5+((90-$CJ5)*$CG5*'Revenue Forecast Weightings'!$C$6,)))

Thanks in advance.

 

[apls2350]

Fixed, please don't respond.