Why does the ACCRFRAC function not work properly in the Finanancial Toolbox 2.4.2 (R14SP1)?

The ACCRFRAC command does not work properly and gives me an error when the input argument "Basis" is set to 6:

accrfrac('12/5/2004','1/29/2009',1,6,1)

 ??? Index exceeds matrix dimensions. 

 Error in ==> dateoffset at 185 

 CpnDay(LookupIndex) = DayTable(DayTableIndex); 

 Error in ==> cpndatep at 158 

 [CpnDay, CpnMonth, CpnYear] = dateoffset(referenceDate(:,3), referenceDate(:,2), ... 

 Error in ==> accrfrac at 96 

 PreviousCouponDate = cpndatep(Settle, Maturity, Period, Basis, ...

Answer 1

[MathWorks Support Team]

This bug has been fixed in Release 14 Service Pack 3 (R14SP3). For previous product releases, read below for any possible workarounds:

We have verified that there is a bug in the Financial Toolbox version 2.4.2 (R14SP1) in the way day count fraction (either directly through ACCRFRAC or indirectly though CPNPERSZ) is different for the various "30/360" conventions.

This occurs whenever the "Basis" argument is 4-7.

There are currently no workarounds.