[Rd] Package does not have a NAMESPACE and should be re-installed

[walcott3 at msu.edu]

I'm trying to load a package locally from a zip file. When I load the  
package, I first get this, which looks okay:

package ?IBGEPesq? successfully unpacked and MD5 sums checked

HOWEVER, when I try to use the package to use the data with
library(IBGEPesq)

I get this message:

  package ?IBGEPesq? does not have a NAMESPACE and should be re-installed

I've tried re-installing it, and I've tried following suggestions on  
similar posts, but with no success.

Help please.