打开s7时出错
弹出下列两条错误提示
1.
One or more objects of a type cannot be represented.
Unable to load the server ''s7utomtx.dll'' for
_S7UT_LEXICON_CONTAINER_CT objects.
Make sure that the required optional packages are installed.

2.
One or more objects of a type cannot be represented.
Unable to load the server ''rcomobjx.dll'' for
_S7_RC_OBJ_APPL_CT objects.
Make sure that the required optional packages are installed.

打开某个项目时，弹出以下错误提示
1.
One or more objects of a type cannot be represented.
Unable to load the server ''s7uvpomx.dll'' for
_S7UV_LIST_CT objects.
Make sure that the required optional packages are installed.

2.
The project "test" contain errors in the internal data structure.

3.
One or more objects of a type cannot be represented.
Unable to load the server ''s7jthomx.dll'' for
_S7J_THC_CT objects.
Make sure that the required optional packages are installed.

4.
One or more objects of a type cannot be represented.
Unable to load the server ''s7wmomxx.dll'' for
_S7WM_ALARM_HEADER_CT objects.
Make sure that the required optional packages are installed.

请问有什么解决方法？