Why Do I Get \"import object is expected\" Error in Golang 1.4.2 After Upgrading From 1.3?

Error: "import object is expected" in Golang 1.4.2

After upgrading Golang from version 1.3 to 1.4.2, developers may encounter an error during compilation, namely "import object is expected." This error typically arises when importing external packages.

In this specific instance, the issue arises while attempting to import the "github.com/keighl/mandrill" package. The error message informs us that the object being imported is not compatible with the current Go version (1.4.2), as it was built for an earlier version (1.3.3).

To resolve this issue, it is recommended to proceed as follows:

1. Delete the old pkg files:

   rm -rf $GOPATH/pkg/

   This step will remove the outdated package files and allow the Go compiler to rebuild them for the current version. It is worth noting that the compiler usually upgrades these files automatically; however, manually removing them ensures a clean setup.

2. Rebuild the project:
   After deleting the pkg files, rebuild the project to allow the compiler to locate and compile the package files for the appropriate Go version.

By following these steps, you should be able to successfully import the external package and resolve the compilation error.

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