CCS/TMS320F28335: creating output section " xxx " without a SECTIONS specification

Tool/software: Code Composer Studio

Hi,

I'm working on the eCAN additional examples from the SPRA876. I imported all the 20 example projects to my workspace (CCS V7).  But  I'm having problems with 7 of them. When building, its said that :

warning: creating output section ".text" without a SECTIONS specification
warning: creating output section ".cinit" without a SECTIONS specification
warning: creating output section ".ebss" without a SECTIONS specification
warning: creating output section ".switch" without a SECTIONS specification
warning: creating output section ".adc_cal" without a SECTIONS specification
warning: creating output section "codestart" without a SECTIONS specification
warning: creating output section "ramfuncs" without a SECTIONS specification
warning: creating output section ".reset" without a SECTIONS specification
error: no valid memory range(NULL) available for placement of ".text"

error: program will not fit into available memory. placement with
alignment/blocking fails for section ".cinit" size 0x32 page 0. A

error: program will not fit into available memory. placement with
alignment/blocking fails for section ".switch" size 0x1e page 0. 

error: program will not fit into available memory. placement with
alignment/blocking fails for section ".adc_cal" size 0x7 page 0. 

error: program will not fit into available memory. placement with
alignment/blocking fails for section "ramfuncs" size 0x4 page 0. 

error: program will not fit into available memory. placement with
alignment/blocking fails for section ".reset" size 0x2 page 0. 

error: program will not fit into available memory. placement with
alignment/blocking fails for section "codestart" size 0x2 page 0. 

The headers, .c source includes and DSP2833x_Headers_nonBIOS.cmd for all of the projects are from  C:\ti\c2000\C2000Ware_1_00_04_00\device_support\f2833x