"Near Singular Matrix Error"

Hi,

I have searched the web, including this forum, but with no success, so I was hoping someone could help me with my problem.
I get the following error when trying to run my model:
"Near Singular Matrix Error - Regressors may be perfectly collinear."

The command im running is:
ls roa_did c pe log_size log_age roa_pre em_pre industry1 industry2 industry3 industry4 industry5 industry6 industry7 industry8 industry9 year1 year2 year3 year4 year5 year6 year7 year8 year9

The problem is in the Industry and Year series. They are both dummy variables. I can add up to 8 industry or year variables, but when I add the last one, I get the perfectly collinear error message.
The two variables are dummies, where 1 or 0 will be present in all, so there will always be a 1 in every year / industry. But I cant see how that can make it collinear in any way.

Using version: Eviews 8, 64 bit Oct 8 2013 Build.

So, in short, when I add the ninth and last dummy variable in either Year or Industry, I get the error. I can run the model with 8 years and 8 industries.

I hope I made sense. I am new to Econometrics, Eviews and this forum.

Thanks in advance:)

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