SVAR impulse response functions (methods and confidence level)

[da8to]

Hello,
I am using Eviews 12 university edition and I have a question regarding estimation of SVARs. It seems that there are limitations in terms of the choices about the response standard errors. It seems I cannot choose the confidence intervals for some of the options (asymptotic, MonteCarlo, etc.). While trying other options, such as a confidence level of 70%, I got "Internal Error 505". This limitation was not listed in the advert for this edition.
Did anyone else ever experience this issue?

Kind regards,
Daniele