kpro ?

hello. we are configuring dms for the first time n firstly we had not checked the storage using kpro for our document types and when we had maintained a value for file size, when we tried attaching originals we noticed we were restricted to 2 originals. we went back to config n checked the tab use kpro n left the filesize blank we can now attach more than 2 documents but we get an error when saving ...error when saving with kpro, runtime error table_free_in_loop.....

my questions are

1.can kpro be used when u intend on saving in the sap database ? how ?

2.can we use kpro wen checking in documents in dms_c1_st ?

3.do i need additional configuration if i'm going to use storage using kpro if so how do i go about it ?