Manish,
If the report contains formulae that reference UFLs then it will Not work in the CR Viewer.
Following are the kind of reports that don't work with the free (standalone) CR Viewer per this SAP Note:
1. Reports that have no saved data, unless they are being accessed online from BusinessObjects Enterprise and you have the appropriate rights.
2. Reports that use Business Views as a data source.
3. Reports that use universes as a data source. (Static instances of reports that use universes will open if these reports are downloaded from BusinessObjects Enterprise.)
4. Reports that use Crystal Dictionaries as a data source.
5. Reports that use Crystal Queries as a data source.
6. Reports that depend on UFLs
7. Reports that are successfully using "Perform Grouping on Server". (That is, the generated report SQL contains a "group by" clause.)
If you want UFLs to work with the Viewer, please have a look at the 3rd-party Crystal report viewers listed at: http://www.kenhamady.com/bookmarks.html
-Abhilash