I use the code below as a standalone csp page on the production server, it returns a grid of all reports when they were created and the last time they were run. I'm using it on CE 9, but you should be able to modify it for CE 8.5.
<HTML>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=charset=UTF-8">
<BODY>
<%
Dim SessionManager
Set SessionManager=Server.CreateObject("CrystalEnterprise.SessionMgr")
Dim Sess
Set Sess = SessionManager.Logon(username, password, APS_Name, "secEnterprise")
Dim IStore
Set IStore = Sess.Service ("", "InfoStore")
Dim holdprop
'Next we create a query
Dim Rs: Set rs = IStore.Query("SELECT SI_ID, SI_NAME, SI_UPDATE_TS, SI_CREATION_TIME FROM CI_INFOOBJECTS WHERE SI_PROGID = 'CrystalEnterprise.Report' " &_
"AND SI_INSTANCE = 0")
HTMLTable="<table border=0 width = ""100%""><TR><TD><B>ID</B></TD><TD><B>Name</B></TD>" & _
"<TD><B>Last Run TS</B></TD><TD><B>Last Update TS </B></TD>" &_
"<TD><B>Path</B></TD><TD><B>Instances</B></TD> " & _
"<TD><B>Recurring Instances</B></TD></TR>"
'and then loop thru the result set of Rs
For Each rsRow in Rs
'Add the instance name and details to the table.
'Ensure that each name is a link to the viewer.
HTMLTable=HTMLTable & _
"<TR valign=top><TD>" & rsRow.Properties("SI_ID") & "</A></TD>" & _
"<TD>" & rsRow.Properties("SI_NAME") & "</A></TD>" & _
"<TD>" & rsRow.Properties("SI_UPDATE_TS") & "</A></TD>" & _
"<TD>" & rsRow.Properties("SI_CREATION_TIME") & "</TD>"
'**************************************************************************
'Get the path
'**************************************************************************
Dim path
path = ""
Dim parentfolderid
parentfolderid = rsrow.ParentID
Dim tempobj
Set tempobj = iStore.Query("SELECT SI_ID, SI_NAME, SI_PARENTID FROM CI_INFOOBJECTS WHERE SI_ID=" & parentFolderID)
parentfolderid = tempObj.Item(1).ParentID
path = "/" + tempObj.Item(1).Title + path
Do While parentFolderID <> 0
Set tempObj = iStore.Query("SELECT SI_PATH, SI_NAME FROM CI_INFOOBJECTS WHERE SI_ID=" & parentFolderID)
path = "/" + tempObj.Item(1).Title + path
parentFolderId = tempObj.Item(1).parentid
Loop
path = "Home" & path
HTMLTable = HTMLTable & "<TD>" & Server.HTMLEncode(path) & "</TD>"
'**************************************************************************
'Get a count of the instances
'**************************************************************************
Set tempobj = iStore.Query("SELECT * FROM CI_INFOOBJECTS WHERE SI_PARENTID = " & rsRow.Properties("SI_ID") & _
" AND SI_INSTANCE = 1 AND SI_RUNNABLE_OBJECT = 0" )
Dim counter
Dim rsRow2
counter = 0
For each rsRow2 in tempobj
counter = counter + 1
Next
HTMLTable = HTMLTable & "<TD>" & counter & "</TD>"
'**************************************************************************
'Get a count of the recurring instances
'**************************************************************************
Set tempobj = iStore.Query("SELECT * FROM CI_INFOOBJECTS WHERE SI_PARENTID = " & rsRow.Properties("SI_ID") & _
" AND SI_INSTANCE = 1 AND SI_RECURRING = 1" )
counter = 0
For each rsRow2 in tempobj
counter = counter + 1
Next
HTMLTable = HTMLTable & "<TD>" & counter & "</TD></TR>"
Next
HTMLTable=HTMLTable&"</table>"
Response.Write HTMLTable
%>
</BODY>
</HTML>