Cannot Save xPage - xpages

Question

My XPage will not save any data that I enter into it. The screen just flashes and the document that is open just redisplays. I assume it has something to do with where the buttons to save (Speichern) / cancel (Abbrechen) have been placed but, no matter where I place them they don't work. I am having the same problem with the New button - although I assume if the one error is found the other problem will be solved :)
Any help would be greatly appreciated as I have been looking into this for the whole day!
Here is the code for the page layout control:
<?xml version="1.0" encoding="UTF-8"?>
<xp:view xmlns:xp="http://www.ibm.com/xsp/core" xmlns:xe="http://www.ibm.com/xsp/coreex">
<xe:applicationLayout id="applicationLayout1">
<xe:this.facets>
<xp:callback facetName="facetLeft" id="facetLeft" xp:key="LeftColumn">
</xp:callback>
</xe:this.facets>
<xp:callback facetName="facetMiddle" id="facetMiddle">
</xp:callback>
<xe:this.configuration>
<xe:simpleResponsiveConfiguration navbar="true" invertedNavbar="true" fixedNavbar="fixed-top"
navbarText="Thomas Vogel Dokumentation" pageWidth="fluid">
<xe:this.navbarAppLinks>
<xe:pageTreeNode label="Neu" page="/xpNewDocument.xsp"></xe:pageTreeNode>
<xe:loginTreeNode enabled="true" title="Abmelden" label="Abmelden"></xe:loginTreeNode>
</xe:this.navbarAppLinks>
</xe:simpleResponsiveConfiguration>
</xe:this.configuration>
</xe:applicationLayout>
</xp:view>
Here the code for the menu:
<?xml version="1.0" encoding="UTF-8"?>
<xp:view xmlns:xp="http://www.ibm.com/xsp/core"
xmlns:xe="http://www.ibm.com/xsp/coreex">
<xe:navigator id="navigator1">
<xe:this.treeNodes>
<xe:pageTreeNode label="nach Titel" page="/xpByTitle.xsp"></xe:pageTreeNode>
<xe:pageTreeNode label="nach Kategorie" page="/xpByCategory.xsp"></xe:pageTreeNode>
<xe:pageTreeNode label="nach Ersteller_in" page="/xpByCreatedBy.xsp"></xe:pageTreeNode>
<xe:pageTreeNode label="nach Datum" page="/xpByDate.xsp"></xe:pageTreeNode>
</xe:this.treeNodes>
</xe:navigator></xp:view>
And finally the for the EditDocument page:
<?xml version="1.0" encoding="UTF-8"?>
<xp:view xmlns:xp="http://www.ibm.com/xsp/core" xmlns:xc="http://www.ibm.com/xsp/custom">
<xp:this.data>
<xp:dominoDocument var="document1" formName="fmDoc" action="editDocument">
</xp:dominoDocument>
</xp:this.data>
<xc:ccPageLayout>
<xp:this.facets>
<xc:ccMenu xp:key="facetLeft"></xc:ccMenu>
<xp:panel xp:key="facetMiddle">
<xp:table>
<xp:tr>
<xp:td>
<xp:label value="Titel" id="titel_Label1" for="titel1">
</xp:label>
</xp:td>
<xp:td>
<xp:inputText value="#{document1.Titel}" id="titel1">
</xp:inputText>
</xp:td>
</xp:tr>
<xp:tr>
<xp:td>
<xp:label value="Datum" id="dokDatum_Label1" for="dokDatum1">
</xp:label>
</xp:td>
<xp:td>
<xp:inputText value="#{document1.dokDatum}" id="dokDatum1">
<xp:dateTimeHelper id="dateTimeHelper1">
</xp:dateTimeHelper>
<xp:this.converter>
<xp:convertDateTime type="date" dateStyle="short">
</xp:convertDateTime>
</xp:this.converter>
</xp:inputText>
</xp:td>
</xp:tr>
<xp:tr>
<xp:td>
<xp:label value="Kategorie" id="label3" for="kategorie1">
</xp:label>
</xp:td>
<xp:td>
<xp:comboBox id="kategorie1" value="#{document1.kategorie}">
<xp:selectItems>
<xp:this.value><![CDATA[#{javascript:var currDB:NotesDatabase = database;
var profileDoc:NotesDocument=currDB.getProfileDocument("configDatabase","");
var docUID=profileDoc.getItemValueString("kategorieDok");
var categoryDoc:NotesDocument = currDB.getDocumentByUNID(docUID);
var categories = categoryDoc.getItemValueString("kategorie");
#Explode(#Text(categories), ";")
}]]></xp:this.value>
</xp:selectItems>
</xp:comboBox>
</xp:td>
</xp:tr>
<xp:tr>
<xp:td>
<xp:label value="Anhänge" id="label1" for="fileUpload1">
</xp:label>
</xp:td>
<xp:td>
<xp:fileUpload id="fileUpload1" value="#{document1.anhaenge}" useUploadname="true"></xp:fileUpload>
</xp:td>
</xp:tr>
<xp:tr>
<xp:td>
<xp:label value=" " id="label2" for="fileDownload1">
</xp:label>
</xp:td>
<xp:td>
<xp:fileDownload rows="5" id="fileDownload1" displayLastModified="false" value="#{document1.anhaenge}"
hideWhen="true" displayType="false" displayCreated="false" allowDelete="true">
</xp:fileDownload>
</xp:td>
</xp:tr>
<xp:tr>
<xp:td colspan="2">
<xp:inputRichText id="inputRichText1" value="#{document1.body}">
</xp:inputRichText>
</xp:td>
</xp:tr>
<xp:tr>
<xp:td colspan="2">
</xp:td>
</xp:tr>
</xp:table>
<xp:button value="Speichern" id="button2">
<xp:eventHandler event="onclick" submit="true" refreshMode="complete" immediate="false" save="false">
<xp:this.action>
<xp:actionGroup>
<xp:saveDocument var="document1"></xp:saveDocument>
<xp:openPage name="$$PreviousPage"></xp:openPage>
</xp:actionGroup>
</xp:this.action>
</xp:eventHandler>
</xp:button>
<xp:button value="Abbrechen" id="button1">
<xp:eventHandler event="onclick" submit="true" refreshMode="complete">
<xp:this.action>
<xp:actionGroup>
<xp:openPage name="$$PreviousPage"></xp:openPage>
</xp:actionGroup>
</xp:this.action>
</xp:eventHandler>
</xp:button>
</xp:panel>
</xp:this.facets>
</xc:ccPageLayout>
</xp:view>
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Answer 1

In one of the buttons I noticed this part immediate="false" save="false"
save should be set to true, I think.

Answer 2

I may have missed it but you should ALWAYS have a displayErrors control. There could be a conversion error or something that you wouldn't otherwise see. You should also think about adding the XPages Log Reader as that can expose other error messages.