hello great ora experts:

i have one problem as bellow:

I have one report on dept table with all fields ie deptno,dname, and loc
and name of rdf report is dept_mas.rdf. This report is working fine with following url.

(http://4fbb3fdbe54c446:8888/reports/rwservlet?userid=SCOTT/TIGER@orcl&server=repserver90&report=c:\oraproj\dept_mas&destype=CACHE&desformat=htmlcss)

I am calling one more report(details report/ drill down report) ie emp_sum from above report using hyperlink
based on deptno of dept table  matching deptno of emp table. 

hyperlink of dept_mas is set as 

(http://4fbb3fdbe54c446:8888/reports/rwservlet?userid=SCOTT/TIGER@orcl&server=repserver90&report=C:\ORAPROJ\emp_sum.rdf&destype=CACHE&desformat=html&p_no=&f_deptno)

p_no is user defined parameter

bUT AT THE TIME OF CALLING DETAIL REPROT IS GIVES FOLLOWING ERROR:

REP-110: File 'empsum.rdfCache=CACHEhtmlcss=html' not found.
REP-0110: Unable to open file 'empsum.rdfCache=CACHEhtmlcss=html'.

any mistake in the procedure pls suggest 

pls give me one live example of the problem

Thanks 
sameer