Detailed log-linearization steps of BGG(1999)

Dear all,
I have different log-linearization outcomes with equation 4.17 and 4.24 in BGG(the financial accelerator in a quantitative business cycle framework, handbook of macroeconomics, chapter 21,1999), so the IRF is not completely the same as BGG.

I don’t know where I am wrong. I will be very grateful to you for pointing out my mistakes.

Thank you in advance!

BGG_LL.pdf (267.3 KB)