insufficient observation

[asadaf]

Hi, I'm suffering with the issue that I got massage of insufficient no. of observations when I try to estimate a series that is log of square of another. I'm having balance panel data. how can I overcome this issue?

[EViews Gareth]

Get more observations.

[asadaf]

I have a panel of 340 observations. t=34 and N=10. the problem appear when I use log of GDP per capital series. without this variable estimation show no problem but I can't exclude this variable, I'm using eview 8.no observation of this series is missing.

[startz]

Post your workfile, including the equation you are estimating.

[asadaf]

I'm uploading my file here. my regression equ is lngini=lngdppc lngdppcs I want to estimate Johnson cointegration anf fully modified ols.

[EViews Gareth]

lngdppc=2*lngdppcs

[asadaf]

thanks 4 ur help but problem is still there. when I use johanson cointegration by including this series (this time calculated through 2*lngdppc) I got a box indicating insufficient observations.