Using AppActivate and Sendkeys in VBA shell command

I know this question is old, but I have run into this same problem, but I don't think the answer that was chosen is the correct one.

When you call AppActivate, the script goes on halt, waiting for the target application to terminate. After the application is terminated, the script continues. I see no solution to this issue.

EDIT:

I use a batch-file to call CSCRIPT for the AppActivate command, and I notice you are strictly using a VBS file. Try calling CMD as a new window and pass CSCRIPT //NoLogo //B WScript.CreateObject("WSCript.shell").AppActivate("Window Name") as the argument, and see if that bypasses the issue.

Similarly, I was trying to use AppActivate on a pdf document I had opened with a shell command so that I could use SendKeys on it. It would always generate Run Time Error '5'. My solution, eventually was to NOT use AppActivate at all, in fact opening the document brings it to the forefront anyway. The problem is that the SendKeys statement executes immediately after the shell command but the pdf needs a second or two to open up. My solution is to pause the code for a couple seconds before excuting the sendkeys statement.

I used a time delay curtosy of pootle flump. Check out the thread here: http://www.dbforums.com/microsoft-access/1219379-time-delay-vba.html

After hours of research on various forums, I could figure out that I wont be able to use Adobe library objects and functions with Adobe Reader. The only viable option left was to use Shell Commands to use "save as text" option available in the Adobe Reader's file menu. The shortcut key is Alt+f+a+x+s. I implemented these in the below code which worked perfectly, although I was required to insert delays in some steps.

Sub SavePDFasText()
Dim AdobeReaderPath As String
Dim PdfFilePath As String
Dim PDFid, NotepdId As Double

AdobeReaderPath = "C:\Program Files\Adobe\Reader 10.0\Reader\AcroRd32.exe"
PdfFilePath = "D:\PowerGenMacro\opm_11.pdf"
PDFid = Shell(AdobeReaderPath & " " & PdfFilePath, vbNormalFocus)
Application.Wait TimeSerial(Hour(Now()), Minute(Now()), Second(Now()) + 5)
'Alt+f+a+x is required to save the pdf as text in the adobe reader
SendKeys "%(FAX)", True
Application.Wait TimeSerial(Hour(Now()), Minute(Now()), Second(Now()) + 2)
SendKeys "%S", True
SendKeys "^q", True

End Sub